BA 7544 then AV 2354 at San Francisco
Seattle → San Francisco → Denver
Timetable, San Francisco time
20:47BA 7544 from Seattle at the gatealso FI 7657
16:24AV 2354 to Denver leaves the gate
19 h 37 apart on the timetable, overnight
AV 2354 leaves 19 h 37 after BA 7544 arrives on the timetable: more than half a day, so not a connection we count.