its the future and I'm still dumb enough to need to search this
If it is what I think you mean, then you are talking about the 'time per move' for each player.
White bar is for light pieces player, black bar is the time per move for dark pieces player.
You can test it yourself. During a game wait first 10 seconds for a move and on the next move wait 20 seconds. Afterwards, hover the cursor above the last 2 bars of your respective color. Will they show 10 and 20 seconds ?
Best regards,
Andrei
Thanks, I was wondering the same as everyone else. Almost 2023.