6E 2167 then 6E 6704 at Mumbai
Patna → Mumbai → New Delhi
Timetable, Mumbai time
18:256E 2167 from Patna at the gate
13:456E 6704 to New Delhi leaves the gate
19 h 20 apart on the timetable, overnight
6E 6704 leaves 19 h 20 after 6E 2167 arrives on the timetable: more than half a day, so not a connection we count.