I have seen a person receive 6-8 implants in one dental visit followed by a full arch provisional or temporary bridge attached to those implants and sent home in the same day. So yes, it is possible to have this happen, but what patients need to understand and what the advertisements don’t explain is that those teeth you walk out the door with are only temporaries and there will need to be multiple follow up visits to complete the process after healing time has occurred.
Sometimes when a single implant is used to replace a front tooth we will attach a temporary crown to that implant immediately after it is placed, but that crown is adjusted in such a way that no forces can be applied to it when biting or chewing, and the patient has to understand that it is for smiling only. If the implant takes on any loading forces at all it could lead to a failure.
Essentially splinting them together as a single unit spread across the mouth. The patient still needs to limit their function, chewing, etc. on that splinted bridge, but it can be done in one visit. But again, the key point is that it’s not the final prosthesis, and unless you heal as quickly as X-Men’s Wolverine, you’ll be wearing that temporary bridge for a few months until the implants can handle the workload they are intended for.