The timer starts at 00:20.633 on the video. Also THE END display timing is 03:53:966.

Additional Notes.

LiveSplit (right) is from practice and the start timing is based on the timer on the right.

The timer on the left was added later in the video editing for reference and started 0.15 seconds earlier than the timer on the right. (Perfect synchronization was difficult to achieve).

For a digest of the stream, please check Twitch:

Our utmost thanks to RTA in Japan 2019 (https://www.twitch.tv/rtainjapan/video/528645426) for giving us the opportunity to play this game!

moderator(fresetio):