Originally Posted by
seawolf
Intent matters because no one other than this community here cares/knows fare calculation.
If hbtr intentionally created a multi-city booking with BOS and picked a ground time of 3 hours 40 minutes because he/she wanted to have lunch with a friend near the airport (and the subsequent flight from BOS would result in a 7 hour stop), hbtr is not going to care about how the fare was constructed (whether it was a LAX-ORD fare with a BOS routing or a LAX-BOS and BOS-ORD fare combined).
AA of course may disagree if fare was LAX-ORD and this could end up being a HUACA/customer service situation.
no idea how the fare was constructed, but just for laughs I compared the cost of LAX-BOS-ORD to the cost of booking LAX-BOS and BOS-ORD as separate one-way tickets and the cost was almost identical (and way more than LAX-ORD) so my guess is they were two fares combined.