Against most characters in order to chain choke you have to read. People with terrible rolls or short range getup attacks are the exception of course. I was speaking in a blanket statement.
After flame choke walk away from them slowly(just out of GUA range), if they stand up or use GUA -> flame choke them again, if they roll backwards (towards you) -> stomp them.
If they stood up or used GUA and you choked them again, dont expect them to do that again, you can condition people by punishing certain options and then assuming they will go the only way you have not face F***ed them. if they roll away just Down-B them, i prefer trying to choke several times (unless im not successful at all)
Its all about mindgames and limiting their options
EDIT: @SBF... first of all that post didnt really make any sense, but i think you were asking if we have any moves that break shields, the only Ganon move that does extra shield DMG (correct me if im wrong) is the U-tilt... so basicly no we have nothing to break shields