The info I have is that it all depends on the bidding behaviour of the inactive pilots. Just because the latest intake was 100 or so from the bottom of the list doesn't mean much. At this stage, there are still probably 500 inactive pilots who aren't interested in returning. That may or may not change. Theoretically, if they all changed their mind and wanted to return, you could wait until 2026 before external recruitment.
At the earliest, I wouldn't expect external recruitment until the end of 2023.