ABC’s already-renewed Marvel’s Agents of S.H.I.E.L.D. opened Season 6 on Friday night with 2.34 million total viewers and a 0.4 rating, down in the demo from both Season 5’s average (2.1 mil/0.5) and finale (1.9 mil/0.5) -- all of which aired an hour later, leading out of Once Upon a Time -- while delivering its […]