Based on reading this thread and the eVIP thread, my understanding is that SWUs and UDUs have the same priority once it goes to airport control for domestic trip (in this case, TCON). But what I'm not clear on is whether SWUs retain their original time of request (especially if you need to re-request, as indicated in the FAQ of the eVIP thread)?

For example, both EXPs, A books ticket first, applies SWU to domestic TCON right after booking, about 3 months out. A is on SWU waitlist, not UDU waitlist. B books ticket later, only UDU.

Once it goes to the airport, they are the same priority level, but from different inventory buckets (R vs C)... is R and C synced in the hours leading to departure, and if not, what is more likely to show up first?

So really, for SWU vs UDU, SWU requesters compete with each other based on timestamp, and UDU and sticker upgrades compete with each other based on status and timestamp?