Sounds for the Combine wall

[Varsity]

I found the old 2003 Strider video on my external HD just now, and when I got to the bit where the Combine wall advanced forwards it made several sounds that are missing from the final game when I play it. When a wall in the game moves, I only get the sound as it pushes out after falling - but in the video, there was one for it rising and falling too (watch the video if that's too confusing). Is having only one of the sounds normal?

 

[DESSTROYER]

nah, I think i heard it in nova prospekt

 

[Ravioli]

when i play, first there is no sound at all, then 5 seconds later it all plays... :/

 

[Rizzo]

I get those sounds i think... Maybee patch?