"Mixed Cabin" 2 - separate itineraries!

BTW, I did this for next weeks flights BKK-NRT-SFO-LAS and the waitlists for SFO-LAS (F/C) cleared one at a time over a 2 week period (3 separate record locators). The waitlists for "ON & IN" from BKK-NRT didn't happen ( for 11 months) as there were only 5 open Bus seats, a month or so out, and F/C showed full. A couple of days ago SQ thing-a-majigg happened and I dumped UA for TG-SQ-UA for the 3 of us BUS class BKK-HKG-SFO & F/C SFO-LAS. Saved 10,000 X 3 to fly ALL THE WAY in BUS and did not need to do the stand-by shuffle in BKK for a waitlist that may or may not roll over @ T-24.

So again to answer Mike --- They were on a "Mixed Cabin" which costs the same as being booked all the way but one is waitlisted for certain segments, and yes we have cleared for immediately when available. Not to say one doesn't need to watch like a hawk as others have suggested.