ezo
Hero
Seriously??? Are you purposely wasting my time with this...?None of that gets around 5e's, "If it's not explicitly WRITTEN(W), you can't do it by RAW." If it doesn't say that you can do it in-between attacks like the movement in-between attacks, you can't do it unless the DM makes a rule that you can. It's really that simple.
Show me the rule that is written that says you can take another action(not bonus action) while you are currently taking an action. If you can do that, I will concede that you are correct. If not, you must make a new rule in order to do it, because RAW doesn't allow it.

FOR THE LAST TIME: There is NO rule written in 5E that says either of these two things:
1. You cannot take an action until your current action is completed, even if you have a feature which allows you to take a second action on your turn (such as Action Surge or the haste spell).
(YOUR "rule", not written anywhere, so NOT a RAW--as much as you seem like you want it to be...

2. If you can take a second action on your turn (such as Action Surge or the haste spell), you can take that action while performing another action.
(My "rule", also not written anywhere, so not a RAW -- which I NEVER claimed it was.

It's REALLY that simple.
So, would you please stop claiming your view is RAW when you have, never (not once!) posted any sort of RAW similar to option #1 above. It doesn't exist, therefore it is not RAW. If you can (finally) do that, I will concede you are correct.
(But, I know you can't.... but please waste all the time you want trying to find that RULE in any of the books...)
At least you seem to finally understand a bonus action (such as in the TWF example) is possible to "interrupt" the Attack action.