Hal Jordan was pretty jerky to Booster Gold during their trip together in Time Masters Vanishing Point. On the brink of Vanishing Point collapsing around them Hal thinks it's a good time to get on Boosters' case for the millionth time and Rip Hunter finally reaches his breaking point with putting up with it.
A couple of things stand out about Rips' reaction:
1.) He basically spells out the secret of Booster working with him. Like in TMVP all clues and in this case stating it outright go completely over Hal and Supermans' heads.
2.) Hals' ring is the only thing keeping Rip alive at the point and Rip still shows no fear telling Hal what's what. I think I love Rip more all the time. Don't diss his dad Hal, Rip don't play that.