Alright, thanks for the help guys. I'll hopefully be able to go to my friend's house this week to try it out. Though there's quite a lot to do and not enough time to do it (defeating all Destiny Odysseys to unlock both Distant Glories and the Fat Chocobo Play Plan may take 2-3 visits to his place, and borrowing his PSP is out of the question since he plays on it often). I suppose I should focus on defeating Shade Impulse completely so I can level up both Cosmos and Chaos characters more effectively.

Also for Jecht, even though the red circles didn't appear, the O follow up timing still exists, so I guess I'll have to play it by ear and remember the timing based on youtube videos of Jecht I watched quite a lot (FF Wiki helped me out with the directional input, so that isn't a problem). Also, I learned from youtube comments that the HP attack is inputted using square after two well timed O follow ups, but only certain HP attacks will be guaranteed to hit depending on which directions were inputted.