A late diversion would burn all of the crew's available hours, so you'd need to get hold of a new one.....
Yes, thanks: I had surmised that in the previous paragraph.
Continuing with a stormy afternoon in SYD on 6 November, QF432, the 1230 hours MEL - SYD (B738 VH-VZS) was airborne at 1255 (only about 10 - 15 minutes late) but as at 1354 was continuing to hold west of Goulburn NSW, so arrival will be at 1434, 39 minutes late, or beyond that given the number of aircraft wanting to land.
The following QF434, the 1300 hours ex the southern capital took off ahead of time at 1306 hours (B738 VH-VXF) but was also holding at 1357 hours.
QF616 (1210 hours lunchtime MEL north to BNE, B738 VH-VXA) took off at 1305 hours, and should arrive at approximately 1403 hours, 43 minutes late.
Q400 VH-QOJ on the 1205 hours CBR up to SYD took off at 1310 (about 55 minutes late) but was also held enroute, so arrival is likely at 1427, 87 minutes late.
Another Q400, VH-QON is on the 1305 hours CFS down to SYD QF2109 that was in the sky at 1322. Arrival should be 35 late at 1455 mid afternoon.
QF529, the 1206 hours very early afternoon BNE down to SYD was pointing skywards at 1308; arrival should be at 1529 hours, 49 minutes late. QF859, the not consecutively numbered scheduled 1230 hours departure on the same southbound route took off at 1333. VH-VYB should arrive at 1550 hours, 50 minutes late.
Vh-VYI on QF863 (1050 hours morning OOL - SYD that took off at 1322 hours) is worse, with suggested arrival in the Australian mainland harbour city at about 1542 hours, 142 minutes behind schedule.
The CBR up to BNE QF1546 (B717 VH-YQU) was airborne at 1339 hours, 89 minutes after timetabled pushback. Accordingly, projected arrival is 1410 hours, 75 minutes late.
QF2023 (scheduled 1350 hours ARM - SYD, Q300 VH-TQZ) was pointing skywards at 1458. Estimated arrival is 1610 hours, an hour late.