They go hand for hand to prevent "stalling".

Say there are 6 tables running and you have a short stack. You are 3 places out of the money and in late position.

If you were to "stall" your next 6 hands until your in the BB again, you might beable to squeak into the money. Stalling so that your table only plays 6 hands while the other tables play 8-10 hands, hoping that 3 people bust out before you.

Very crappy way to try and win.