From what I can find on Korean news sites and Inven, the 1v1 will also be streamed through in ways other than the T LOL app. Unfortunately, none of them give specifics. Just stuff like this:
"This event will be broadcast through various channels including T LOL."Originally Posted by 스포츠경향
If anyone wants to watch it live, the best bet is to check Afreeca for streams just being run off of some dude's phone.