Here is an example making sort of curious things for me
"who are customers with questions advised to speak with"
In the above sentence, what does "with" function at the end of it?
Simply, next to verb 'speak', dose this just work that say something with someone as a verb phrase?
assisting 'who' to make sure to represent a meaning who customers should ask their questions to?
and, if it is correct in the second case, is it able to be replaced by other sentences like "with whom are customers with questions advised to speak" or "who are customers with questions advised to speak to" ?