is difficult to connect with on any deeper level 
(ROOT (VP (VBZ is) (ADJP (JJ difficult) (SBAR (S (VP (TO to) (VP (VB connect) (PP (IN with)) (PP (IN on) (NP (DT any) (JJR deeper) (NN level))))))))))
(ROOT (VP (VBZ ) (ADJP (JJ ) (SBAR (S (VP (TO ) (VP (VB ) (PP (IN )) (PP (IN ) (NP (DT ) (JJR ) (NN ))))))))))