advice How To Dropcatch An Expired Domain from XXX without using them as registrar?

The registrar dropping the domain is totally irrelevant if the domain is already in pendingDelete status and has no effect on if you can catch the domain once it's available.

Hi Nick, thanks for replying.

I was using dropcatching service and got a domain successfully but it was registered with registrar A.

The domain was previously registered with registrar A too. So I am not sure if this relationship was coincidence, thus the question as above.

I was expecting it to be the dropcatching registrar.

Thanks for clarifying.