Yep, the main reason we got bounced in KC last year is because our O-line couldn't block for the run *or* the pass. It was horrific.
The main reason we lost in BUF last year is essentially because their O-line beat up our D-line, primarily on running plays. We basically invited them to run it, and we didn't do a good enough job stopping it. I think we'll use the same strategy this time, and we'll see if the rejuvenated D-line (especially with Star) can hold up this time.