Haha I was JUST about to post the same question! Must be that time of year as my collection year end date and card expiry date are the exact same as the OP’s lol.

I have only taken 2 of 4 qualifying flights, and can’t take anymore before my tier collection end date, but I have a (redemption) trip after my collection end date but before card expiry date. Is that ok also? ie. Do I still have my Gold card and benefits right up to card expiry date (31/10) no matter what I do or don’t do re: qualifying flights?
Thanks!