Without a systematic approvals check proceedings only become visible after signing.
The first step is a structured survey: which activity the company carries out, which permits are needed for it, which turnovers and market shares the acquisition triggers, whether the seat is in a regulated sector, whether real estate is part of the acquisition. From these answers it follows whether merger control, trade law, real-estate transfer law or investment screening is touched. The check can also show that no approval is required; the result should however be documented.
A deeper look at completion is offered by the post on closing conditions. Only once the regulatory landscape is known can the timetable be set up robustly.