Ebay selling - They need my bank account info?

Canadian law may well be significantly different from US law. But whatever the statute in Canada is, and assuming it is a brightline cut-off like US statute, it’s a good bet the bank knows what that cut-off is and has their computers programmed accordingly.

At least under US law, not reviewing statements timely is an excellent way to comprehensively lose all recourse against the banks if you get unlucky and get scammed.

See also this current thread.