Picture = words

Light = host
Seventeen = me
So I was able to see my friend in the chat lobby just fine, and he created a game as host for me to join. I was able to join the game as it was forming, but once he hit Commit, we were left stuck on the screen above for 10+ minutes. We didn't wait longer than that, but I doubt it would have gotten anywhere if 10 minutes wasn't enough.
It just gets stuck saying the host status is "Mission sync" and mine is "Mission file xfer (transfer?)" Other than that, it just says "Sending update state packet" for me. I believe the host was seeing a bit more text in the panel in the bottom left.
If we can see each other and I can join his game as it's forming, port forwarding/static IP shouldn't even be a matter right?
Thanks for any help!