Though the people who saw the rehearsal of the Emma and Hook scene just saw them walking and talking and a kiss, so what was rehearsed was probably what was filmed.
But again the last time they did that was on 322, to hide Cs kisses, if nothing major happened why they cover the set for fans dont see if they had seen the reharsal, or at least part of it, the fact that they covered that, whne they didnt cover other major scenes, means they are hiding something that was not shown in reharsal.
But yeah, i say that they were filming 523 scenes, in fact imbd( i know not a official source, puts, lJ, Merida, Granny, Roland on 523).
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"I offended you with my opinion? Ha, you should hear the ones I keep to myself".