PS splits my withdrawal???

[wegs the wegs]

I'm kinda confused on this one, I've never seen it happen before.

I made a large withdrawal on Stars at 8pm last night. At 1:51:19am EST this morning I made another withdrawal, this time smaller for $500. Now I wasn't thinking too much at the time but when I clicked to finalize the transaction I expected it to be declined. Normally they make players wait 48 hours, right? Well it went through.

Checking the email they stated that the $500 withdrawal was accepted, $100 was sent instantly, and $400 is on its way. This is new to me. Is the reason they do this due to the earlier withdrawal?