There’s also this one. It is done purposefully too, this isn’t done by accident. They are supposed to be in sync because it shows how alike they are and are the same 🙂
Example: 
^ This is done purposefully too. They even had a sip of their drink at the same time. It’s to show how much they have bonded and that they are alike – Charming is his grandfather after all.
So Hook/Emma is the same.
By the way, gifs not mine.
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