Acquire in haste, repent at leisure

With any merger or acquisition, clear communications can help quell unrest among staff. The acquiring company will want to ensure they retain their new staff.
You don’t have to look very far to find examples of failed mergers and acquisitions. Among the most famous was the ill-fated marriage between car makers Daimler and Chrysler.
Culture clashes along with incompatible structures and other issues led to a messy divorce in a fairly short period of time. Salutary tales like that serve to highlight the necessity for a strong post-deal integration strategy.