Moaning during Wallachia cast (OG v Nigma)

What the hell was goig on durig OG v Nigma game 1?

Tell me I'm not the only one that noticed what sounded like sex happening during Snare+ Synderen's cast of the first game of OG v Nigma. Several times I had to doule check my PC looking for a porn site or ad running in the backgroun, only to realize the sounds were coming from the Wallachia cast. At several points throughout the game you can hear gasps, sucking/kissing, and moaning.

I was thinking someone from production or one of the casters was watching porn and the sound was leaking into the stream. But the more I paid attention to it and the more times these sounds would come on the stream, the more it seemed like someone was actually having sex in the studio as it sounded like the people involed were trying to be as quiet as possible.

Check out the clip below, that moan was WILD. This was the loudest and most obvious example, however, after this the weird sounds continued (sparsely and faintly) well into game 1. https://www.twitch.tv/pgl_dota2en2/clip/PrettyBlueInternTF2John-EW8ARNKrZk5OAly9