Had this insane Tagilla instance during this boss event that I've never seen before in 3k hours, one of you please attempt to explain this [Discussion]

My buddy and I were on night time factory running some cheeky shotgun drills, we make it into main office and we hear somebody running up the metal stairs near G3.

Then suddenly we can hear them creeping up outside the entrance to main office. It's just a straight stand off and nobody is moving for probably an entire minute+

Then all at once, Tagilla and some other guy kick open both doors at the exact same time and the place turns into a blood bath.

My question is, who in tf was that other guy.. was it a P Scav with max Fence, was it Attila the Hun.. who in gods name was this. And if it was an actual person, how in gods name did they coordinate that double breach at the precise same time?

Sh!7 was sick as f$$@. Even though I was dead asf after.