I stand corrected....sort of

yes, after a change of possession or timeout, Team B should get a fair look at what Team A is putting out there. I think this situation is still a little unique though. the key words in your quote, I think, are "When Team A has completed its offensive formation." to me, this implies that there's Team A people still shuffling onto the field, or subbing, AFTER the ready for play.
but I don't believe that's what happened on this play. (I cant see the video at work, so I could be misrecalling this, but I think team A's formation was pretty much on the field once the RFP was sounded.)
if they didn't rush anybody onto the field, or make substitutions after the ready for play, then I dont see why B would get an iron cross.
separate question: could the WH have simply penalized B for failure to come out on time? without making the ball RFP?