I asked them both to join using in game text chat while the team was joining but after they had joined the server and neither did at any point during the lobby.
Logs: http://logs.tf/517694
Steam Name: s•a | Lt. Cas ʕ•ᴥ•ʔ
Steam ID: 0:0:50085096
Steam Name: s•a | Wetterhound
Steam ID: 0:0:44375895