WN 209 then LH 447 at Denver
St Louis → Denver → Frankfurt am Main
Timetable, Denver time
18:50WN 209 from St Louis at the gate
17:25LH 447 to Frankfurt am Main leaves the gate
22 h 35 apart on the timetable, overnight
LH 447 leaves 22 h 35 after WN 209 arrives on the timetable: more than half a day, so not a connection we count.