Sometimes called "proud ignoramus" by friends who know me well, my guess\analysis is:

(A) It is a roundtrip ticket since you
mention "return", thus yes. You start at EWR, connect (not stopover since its a "thrufare) thru ORD, then stay at LAX, then return. Two different carriers is irrelevant.
(B) Is it a "point-to-point"? My guess is no because ORD appears to be a "connection"
between EWR and LAX, and not a stopover, since this a "thrufare".
(c) Is it a "circle trip", I'd say no again since ORD is not a stopover.
(D)Is it a RT ticket which uses 2 one way fare type ticket? This one I don't feel comfortable about guessing but I'll guess no since from experience when hearing reservations mumble aloud that they have to match "fare-classes" on all segs when using different carriers for one RT. If this wasn't a "roundtrip", then it could be two one-ways and priced as such.

(e) bonanza for frequent flyers- depends if and how man FF points you got on each carrier. At least you got upgraded.

(f) better hurry and post the answer otherwise I'm liable to change my response every day

[This message has been edited by crankyusi (edited 01-08-2001).]

[This message has been edited by crankyusi (edited 01-10-2001).]