Demo attached.   No time frame needed.  Set r_shownormals 1 and the WH is clearly evident throughout the demo. 

He got an 8 hour ban yesterday at about 22u CET.  This demo was from earlier in the day.

Yeye here the demo.

Most of the demo is... yeah maybe sound... yeah maybe choke point... 

when he jumped in water and was killed from behind I thought... nah he ain't a wh...

watch till the very end... last kill....

If that ain't a wallhack I don't what is.... (unless funstuff does not show up in demos? because I see peoples hats across the pond underwater all the time without goggles)

That he was killed from the back isn't a hint that he dosn't hack because WH just show your enemy infront of your sight.