Alright I was able to try that corner 4C I explained before and while doing the corner CS combo normally works once in a while, the timing is weird and the opponent might tech before 623A, if you do 4C you end up closer, the orb ends up closer and the enemy doesn't get time to tech, I'll dig up my capture card and show an example of what I mean.
Delaying the 623C worked wonderfully after dash C, thanks Brett, I felt like I'd miss the cancel window if I delayed it too much, but that wasn't the case.
Another small note:
I like this way more over what I usually do after a blocked dash C > 623A crossup (I just 214AC right away, the risk of dropping that is high too)
I found out that you can actually increase the damage if you squeeze a 623A > 2C(1) after 623B (Not only that but that also means there's no risk of dropping 214AC since you cancel right after 2C, you don't have to time if after 623B and of course you can still 6C after the move)
Edit:
It seems like this extended route isn't possible after a command throw > CS > Dash C starter (Or 623C >CS). They tech before 6C, and it doesn't seem like a j.6C makes it work.