Double Slit detectors question

[DrChinese]

When does this correlation between Bob and Alice's data manifest itself.
1. After Alice's recordings but before Bob's recordings.
2. After Alice's recordings and after Bob's Recordings
3. After Alice and Bobs recordings have been compared.

And further if the answer is 3 above, does it imply that the correlation could not exist ,between the time interval of event 2 and event 3?
Or even between event 1 and event 2 for that matter?

Orthodox QM is relatively silent on the specifics of when such correlations (and entanglement itself) begin and end. Different interpretations can yield different answers, and there is no specific test available to clarify. All you can do is predict the ultimate outcomes, and the rest is up to you.