The following question arrived this morning about 3-shift operations in a factory: "Is it a good idea to have both the 'leaving' and the 'upcoming team' together having the shift handover and line meeting all at once?"
In principle, having a handover in person at each work station would be valuable, but is often impractical. If, for example, a shift is behind schedule, a gap between shifts gives it an opportunity to catch up but a shift overlap doesn't. And when the shift is on schedule, the gap can be used for maintenance. There are also logistical issues with overlapping shifts: during the overlap, your facility must accommodate the populations of both shifts at the same time. This means an oversize parking lot, crowded hallways, and a crowded shop floor.
A shift overlap for line management, on the other hand, is easier to arrange, starting as the production supervisor level, even with a gap between shifts.