Just an observation, but it's interesting to note that the time between F1 filings is gradually getting less and less -
1. F1 - 17/08/21 (initial filing)
2. F1/A - 28/09/21 (42 days difference)
3. F1/A - 03/11/21 (36 days difference)
4. F1/A - 23/11/21 (20 days difference)
5. F1/A - 07/12/21 (14 days difference)
There's still 2 weeks to go until christmas