Post audio video sync

I’ve done all this a few times and it’s going okay. One thing I don’t understand is, in the synced audio, should BOTH audio sources be checked? It is that way initially and I thought it shouldn’t be? Otherwise, it’s going okay. 

This is what I mean: which is the synced-in audio?

Connected. Storyline is the camera audio.

Okay. The only other mystery... which I'm past right now, is that I noted that went I selected a clip of this long, synced in audio, both StoryLine and Connected were checked. When I unchecked either, both unchecked. I then went back to the Synced video audio and then unchecked Storyline there, re-selected the area of the clip I wanted to add to the timeline, then the clip showed only Connected was checked.

Maybe I should have unclicked Storyline before I started moving pieces of the clip to the timeline?

Thanks again!