IB 380 then AC 3922 at Madrid
San Juan → Madrid → Washington
Timetable, Madrid time
11:20IB 380 from San Juan at the gate
11:00AC 3922 to Washington leaves the gatealso LH 9401
23 h 40 apart on the timetable, overnight
AC 3922 leaves 23 h 40 after IB 380 arrives on the timetable: more than half a day, so not a connection we count.