Okay this J4 hand is really effing weird.
https://www.twitch.tv/videos/306445878?t=5300s
At 1:30:05 the guy commentator turns his around as if someone is speaking to him. Then tells the viewers "Oh, the booth is confirming, Taylor says it's actually jack jack" It definitely looks like he hears this message in person as opposed to headset, or something else. I then fast forwarded 28-32 minutes forward to see what happened near the table 30 minutes after the hand took place. I was trying to see any sign of Taylor walking out of the desk near the poker table to place him there and confirm he walked over to the commentators to tell them about the hand. However, it appears Justin was actually the one to walk over to the commentators and relay them the message.
I've added two arrows to the above graphic. There are two walkways leaving the room, I believe one is the entrance to Justin's desk and the other is for a bathroom or smoking area as people go in and out of it throughout the stream.I can't find a date for this video but thought it was in the fall of last year? However, the curtain between the poker table and Justin's desk is not up. Anyway you get a better glimpse of what's back there.
1:57:20 (note this is about 3 minutes before the commentators receive the message that the guy had JJ not J4). You see Justin walking outside his office over to some other tables. You can identify him by his shoes and jeans.
1:58:10 Justin standing next to Mike at the table, casually chatting with some players, including Mike and on his phone. I assumed he is watching the delayed twitch stream and waiting for the J4 hand so he can walk over to the commentators.
1:59:30 he leaves the table and walks over to the door of his office, looks in and then turns around.
1:59:47 he is cut off the screen walking towards the commentators booth. Note the timestamp above, this would be 18 seconds before the commentators receive the message assuming exactly a 30 minute delay.
2:01:08 he is shown back in the top left of the screen returning from wherever he was, presumably the commentators booth. This would be one minute after the commentators received the message.
This timeline is too perfect, it can't be a coincidence. I'm almost certain Justin walked over to the booth and told the two commentators "Taylor said he actually he had jack jack." What does this mean? I'm not sure exactly. At the very least, it places Taylor and Justin in communication during the stream. I think they are sitting right next to each other in Justin's office with the live production on one computer and the twitch stream on the other.