ABC opened the evening with a second-place 3.9/ 6 for veteran “America’s Funniest Home Videos” at 7 p.m., which led into a diluted (and distant third-place) 4.1/ 6 for “Once Upon a Time” from 8-9 p.m. Comparably, “Once Upon a Time” slipped by 27 percent from the 5.6/ 8 on the year-ago evening. Next on the alphabet net was original “Hallmark Hall of Fame” made-for TV movie “Christmas in Conway” at an uneventful 4.2/ 6 from 9-11 p.m.