Slight clunk coming from driveshaft or diff

ZinEU

Apologies for the confusing title, and I first want to mention my car drives perfectly fine, no strange noises whatsoever, this is strictly a noise I hear when I make the clutch/flywheel clunk on purpose.

When I let the clutch out fast (at idle)until it grabs to make the clutch/flywheel clunk on purpose I could also hear a slight clunk coming from right behind me. Obviously there is going to be some play in the gears and driveshaft, just curious if it’s normal noise. I only just noticed this noise, but I’m sure it’s been doing it for a while or maybe it’s whole life. Has anyone else noticed this or able to recreate the noise? I have already replaced the diff bushings, so it leads me
To believe it’s a normal noise.