Has anyone who made a simple claim (as in Flight cancelled on 27th May, looking for compensation) not had their claim processed?

I can't find where I asked advice previously but my claim was processed within a few days. Made 29th May, settled 3rd June but my partner's with exactly the same flights and claim date has only had the case allocated a number. (In fact we both had 2 case numbers allocated with my first one being processed)

Clicking on the link in the email, for an update, didn't copy the claim number across but all was filled in as required. I thought that an automatic acknowledgement for this would be received, but not.

Was I simply very lucky to have mine processed so quickly?