We merged months ago. Why does it still feel like two companies?

HeartCulture and change6 minute read

We merged months ago. Why does it still feel like two companies?

The new structure went live on day one. The habits did not follow. If people still say “them” about the other side of the business, you have not failed. You have skipped a step, and it is one you can take this week.

One organisation on paperOne organisation in practice

THURSDAY, 4.30PM

The all-hands has just finished. The new logo is on every slide, and the chief executive has said “one team” four times. In the kitchen afterwards, the conversation splits the way it always does. The people from one side stand by the window. The people from the other stand by the door.

A manager who joined through the merger says it plainly: “When something goes wrong, I still ring the people I used to work with. I don’t know who to trust over there.”

Nobody in that kitchen is being difficult. They are doing what worked before. We hear a version of this every time an organisation is brought together, whatever the size or sector.

A composite drawn from our work. Details changed to protect the people in the room.

Does this sound like your organisation?

Tick what feels true. There are no wrong answers here.

This is normal, and it is fixable

If you ticked three or more, you are where most merged or restructured organisations are a few months in. The chart changed in an afternoon. People take longer, because culture is not the values on the wall. It is the set of habits people fall back on when nobody is watching: who they ask, what they escalate, what they let slide.

A new structure changes reporting lines. It does not change habits unless people are given a reason and a way to build new ones together. That is the step most integration plans leave out.

Two approaches to bringing teams together. Structure only goes from redrawing the chart to announcing one team, and old habits carry on. Habits first goes from surfacing how each side works to agreeing shared habits together, and leads to one way of working.STRUCTURE ONLYRedraw the chartAnnounce one teamOld habits carry onHABITS FIRSTSurface how each worksAgree shared habitsOne way of workingBuilt by the people who have to live with it
The chart is the easy part. The habits are the work.

There is a trust reason too. People will not change how they work for a leadership team they suspect is not telling them everything. If there were losers in the restructure, say so. If some old ways are going, say which ones and why. Honesty about what changes is what makes people willing to try the new way.

People do not join a structure. They join the people they learn to trust.

What you can do this week

You do not need a new programme to start. You need one week, a room and some honest questions.

  1. Monday

    Listen to each side

    Ask a small mixed group from each part of the business three questions: how do decisions really get made here, who do you go to when something breaks, and what are you nervous to say. Take notes, do not defend.

    You leave with: an honest picture of how each side works
  2. Wednesday

    Name the gaps

    From those notes, list the three places where the two ways of working collide most often. Be specific: a meeting, a handover, a sign-off.

    You leave with: three friction points everyone recognises
  3. Friday

    Build one shared habit

    Put people from both sides in one room, physically if you can, and agree one new way of handling one of those friction points. Give it an owner and try it for a month.

    You leave with: a first habit that belongs to both sides

You already have what you need

Organisations that come together well are rarely the ones with the slickest launch. They are the ones where leaders kept listening after the announcement, named the awkward parts out loud and let people shape the new way of working.

Your people already know where the joins are. They are waiting to be asked. That is a good place to start from.

If you want someone alongside you while you do it, that is what we are here for.

See where to start

A Body Check scores your organisation across all six practices, including Heart, and gives you a prioritised plan you can act on.

Book a Body Check

Go deeper

A deeper paper on bringing organisations together, with the listening questions and session formats we use, launches at the Commonwealth Business Forum in November 2026.

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