Where did you see something about 45 days? I was on with Verizon an hour or so ago on an unrelated matter but I asked if any further information on the Note 7 fiasco and she basically said what we already know. Didn't say a word about 45 days return policy.
Sprint, Verizon will let Samsung Galaxy Note 7 owners trade their replacement devices for any other phone - Recode
These reps are not all on the same page, yet. My CSR I spoke to on the phone didn't even know about the airplane situation until I told her about it this morning on the phone. She then put me on hold for 5 minutes to find out more info and what Verizon was offering, which was the extended return policy (from 14 days to 45).
Unless these reps are asked, they likely won't check with the other reps or supervisor around them. I plan on visiting my local corporate store tomorrow morning to see what to do. For folks planning to go to a corporate store, there are employees, managers, and then general managers. The GM is one calling all the shots, so ask to speak with them if employees and managers are not helpful at all. Also, keep in mind that this new issue is still fairly fresh, so Verizon, as well as other carriers, are not all on the same page, yet. Seems like almost everyone is offering some sort of exchange/replacement for replacement N7s, though.