Hmmm. Seems more shows are doing this these days. So if Days follows suit, then yes, there will be *some* notable scenes/info on the digital series that will eventually intertwine with stuff on the regular show. Those that watch the digital will know and understand right off the bat, the rest of us will "oh gotcha" our way through those scenes...haha. I rarely watch the digital shows.
The Walking Dead does this. They have a digital series that airs and at some point in the tv show, it merges. Only takes me a second to figure out what's going on and "catch up". So I have hope Days will be just as easy. They make it so it really isn't a big deal if you don't want to watch the digital series. Just those that do, get that extra background info.
No worries, it will be fine, I'm sure. interesting though, that Days is going to do this.