If you close the chat box, the light flashes which probably is more distracting than having the window open.
I try to wait until the shot is hit before typing but depends on how many drinks I've had. LOL
Personally, I've gotten used to it and don't get bothered by it after playing for so long.
The op hasn't played much with only 15 ranked rounds, 1 match play and 0 alt/shots so it will probably take some time to block it out.