With the new Duel Mode, it introduces a structured game.
By default when you join with another non-bot player, it is in the "Warmup" phase.
This will last 5 minutes by default before it resets.
In order to start an actual game, you will need to go to the console and execute:
Once both players agree, a countdown of 5 seconds will commence, the map will reset and both players will automatically join.
In order to abort a game without disconnecting, execute the following:
Once both players agree, the map will reset and you will be returned to the "Warmup" phase again, players won't be auto-joined. Statistics are not recorded during this time.
Note: If server-side demo recording is enabled, ...