UA 559 then B6 1889 at Newark
Fort Lauderdale → New York → San Juan
Timetable, New York time
12:28UA 559 from Fort Lauderdale at the gate
10:35B6 1889 to San Juan leaves the gate
22 h 07 apart on the timetable, overnight
B6 1889 leaves 22 h 07 after UA 559 arrives on the timetable: more than half a day, so not a connection we count.