OK, I'm very very silly and I rented CofF and have spent the last half hour looking at the sequence mentioned in EW. THere are any number of people who might be HL or SF. I took some
screenshots and circled the ones that I thought might be HL (on the right) and a couple that might be SF (on the left). And another one with a glimpse of someone HL-like. You'd have to download the screenshots to see it at all, but those two seemed to be moving like HL and SF. But they are way in the back and you really can't tell. Anyway, nothing definitive and only for the truly obsessive. Otherwise, move along... (And, as obsessive as I clearly am, I'm not watching the whole movie.)