At time 1 Fry joins line A.
At time 4 Leela joins line B.
At time 5 Bender joins line A.
At time 6 Hermes joins line B.
At time 8 Scruffy joins line A.
At time 8 Leela is done!
At time 13 Fry is done!
At time 16 Hermes is done!
At time 20 Nibbler joins line B.
At time 24 Nibbler is done!
At time 33 Bender is done!
At time 41 Scruffy is done!

Longest wait: Scruffy, 33 mins.
Shortest wait: Leela, 4 mins.