<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by sfpaul900:
I wonder if 'nested' trips are allowed. In other words, instead of booking one LGA-ORD-DTW-ORD-LGA trip, book 2 trips: LGA-ORD-LGA and ORD-DTW-ORD. If not checking luggage, could it work?</font>
As long as they're on separate PNRs, don't see why not. That'll cost more though.