Being not able to meet physically or test/see/apply/benchmarg the respective products of the acquired company makes it much harder to prepare the integration plan and its synergies. It might work at the beginning, but at one point it is key to have physical meetings especially when it comes for cultural topics).
Of course, online tools such as Teams/Zoom but also video messaging or internal platforms should be used as much as possible, they are of big benefits since they are so established meanwhile.
