We are executing proximity phrase searches and specify that only the hits where the words are not separated by commas are valid as follow: word1 word2 W/[^,]{,xchar}. How do we add the additional requirement that the hit also be in the same sentence to be valid?
I'm not sure what xchar is supposed to be. There should be a number there.
You might use a variation on the sentence delimiter and include , along with . etc.
[^\digit][.,?!][\space'"]