Yes it is hard today- I had a few lucky wild guesses.
Not sure of the title connection yet
3d Normal clue , no extra word
3 letter synonym for trendy
2 letters syn for stolid
2 doctors + "in charge"
defn "of racecourse" (an old one)
17d RIBA is the extra word
split 7,5 1st word synonym for network, 2nd word synonym for built