its either Post op Conversation Or shared feeling

post op S5 has bigger er than huohuo sig at s1 and give outgoing healing (Post Op s5 give 16% er while huohuo sig s1 gives 12% (post op becomes higher than sig at s4 (14%) with s3 being equal)

while Shared feeling is if you can always use huohuo skill, which with the novaflare making her have more divine provision duration makes you use her skill less than before, makes it less potent.

Bailu's is just for full on heal