Not quite. At Delta, Reserve Guarantee is ALV-2, bounded by the range 72-80.

Further, this can be adjusted down on a pro-rated basis for things like Vacation, a personal drop, ALPA work, CQ, etc. If you complete a trip which exceeds YOUR Reserve guarantee, you "have no further obligation to the company". You do not need to be marked "Full". You can simply ignore any phone calls until the next bid period if you desire. One example is a week of vacation is now worth 28:00, so if the Reserve Guarantee was originally 72, YOUR reserve guarantee would be 44 hours, which is why a lot of pilots bid reserve in a vacation month.

However, as accurately stated, if you finish a trip with even 0:01 of YOUR reserve guarantee left, they can give you a trip up to ALV+15, which can easily be a 3-day trip, or even more. That vacation month would have 43 hours until that "cap"... However, said trip may not extend into any days off. (We call them "X-days"). So if you only had 2 days of "long call" remaining, they could only give you a 2-day trip.

One big loophole closed in our new contract is that Trips which cross from a Reserve month to a Line month are now always a proffer. They used to be able to give you a trip which took you into days off in a line month with no consequence. Total BS, but no more.