Just a quick dp - I went to book a rental car 2 months out. I went on the chase travel portal about 1:45 and was seeing rates less than half of what priceline/others were showing so I went to book. I didn't realize you have to use a chase cc to book so i got logged out by the time i got off the phone with them (I didn't book on phone bec the booking is for someone else and I needed to find out how he wanted to proceed - he had given me an AMEX). Came back to book after 2 pm, rates shot up - not as much as priceline/others, but enough to tick me off.
Makes me wonder what goes on behind the scenes of that portal...