As always, thanks for the free Byteball!

Something strange has happened to me this time:
8 hours before the snapshot I sent an additional 1.1BTC to one of my previously linked BTC addresses.
Some time later (1 or two hours maybe) the transaction got confirmed and checking in transition bot the additional balance was acknowldged.
Yet when I have received my GB it is as if that 1.1BTC wasn't added.
So... how many confirmation are needed for a balance to be considered in the airdrop?
Why do transition bot doesn't apply the same restriction when showing linked balances?