I have definitely seen cultural conflicts exist. An example was when someone on the integration team, was heard saying ” this is not an integration, this is a take over”. Luckily this was isolated, however I know some associates were not enthusiastic about that behavior.
I am not an Integration Project Manager but I have seen several times where senior leadership has incorrectly provided information to team members, noting for example, that they would be assigned new roles as if they were simply pieces on a chessboard. for example, someone with absolutely no foreign trade experience was added to the foreign trade team and at a lower level from what they had been. As a result, they obviously left the company, which was unfortunate as they were highly skilled in their original role.
Thus, I have seen senior leaders make mistakes during a company reorganization initiative.