On the last mora of reported speech, right before って, I sometimes hear a high pitch (or maybe stress) where I would normally not expect one. If there is a ない in front of the って, for example, I often perceive the い to be really high in tone and somehow stressed. I'm not too good at distinguishing and noticing pitch, however, so I might just be imagining things, which is why I decided to ask.
Edit: It's been two weeks since I originally posted the question, but in a Youtube video, I found a really good example of what I meant: https://youtu.be/gR5KVIP7PKk?t=21m18s
It's where the lady says 「もしかしたらこの人ともう二度と会えないかもしれないっていう気持ちでいつも接しているんです。」 and the high い in front of って can be heard really well.