ARROW FLASH viewing order part 2

Okay so here's where it gets weird. Apparently between Arrow episodes 15, 16, and 17, Flash episodes 18 and 19 happen. And between Flash episodes 20 and 21, Arrow episode 19 occurs. No idea if that's true or not but will confirm. Will have more later. Stay tuned.

Planned viewing order
Flash ep 9-12, Arrow 9-12, Flash 13-16, Arrow 13-14, Flash 17, Arrow 15, Flash 18, Arrow 16, Flash 19, Arrow 17-18, Flash 20, Arrow 19, Flash 21, Arrow 20-22, Flash 22, Arrow 23, Flash 23

UPDATE: Arrow's final episode has to be viewed in between Flash's final 2 episodes. The Doug Jones episode of Arrow needs to be viewed before the prison transport episode of Flash.

There are a few crossover characters that show up in Flash. Felicity and Atom in one episode (to be viewed just after Atom makes his suit), and Black Canary and her dad police chief (before the Arrow episode where Canary has the sonic scream device).