Caitlyn 2XKO combo: 724 damage, expert+. the two supers are optional, but optimal, leads in an almost garanteed TOD.
9 Jump > Air H Hold > M > H > S1 > 6S1 > S2+( L or M or H ) > 9 Jump Cancel > Air H Hold > M > H > S1 > 6S1 > S2+( L or M or H ) > Dash > 2M > M > H > S1 > S2 > L > 2M > M > H > 2H > Jump Cancel > Air L > M > H > S1 > S2 > 6S2 > Air 2S2 > 2T
the two supers are optional, but optimal, leads in an almost garanteed TOD.