UA 3463 then B6 1889 at Newark
Rochester → New York → San Juan
Timetable, New York time
11:00UA 3463 from Rochester at the gate
10:35B6 1889 to San Juan leaves the gate
23 h 35 apart on the timetable, overnight
B6 1889 leaves 23 h 35 after UA 3463 arrives on the timetable: more than half a day, so not a connection we count.