Yikes!!! I believe we have a difference of opinion here!
Maybe your LOAs specify differently, but even if the next sector takes the flash, the aircraft is still your control while in your airspace. I can give a guy a 360° turn after the next sector took the flash, and still be legal if he's in my airspace.
For example: I start the handoff on a departure passing 3000. The center takes the flash at 4000. I still have control to vector the guy out of the gate, or around traffic, or stop his climb below traffic, as long as he's still in my airspace.
And on that logic, it's not uncommon for me to take a handoff 20 miles outside my airspace and not talk to the plane until 5 out. Maybe they had traffic, maybe the controller needed him for some reason. It's not my concern. I only care that I'm talking to him by my boundary, and when I do talk to him he has no conflicts.
Do you guys do something differently?