It could be one explanation for the time being taken.
People on here that have seen PR in court are sure, from his gait and stance alone, that it is PR in Spidercam. That's even without gait analysis. From the timeline gleaned from whatever was seen from the bench, it can only really be Libby being placed in his car IMO.
Also if there is clearer CCTV footage from anywhere, it will make it easier to judge whether less clear footage is also him - same stance, same walk, same height, same clothes whatever might be obvious.
Local shopkeepers were saying in MSM that they'd handed over all their CCTV to police. There would probably also be cameras on buses (there are round here). They also requested dashcam. LE found out she'd spoken to grey Beard almost as soon as she was reported missing so they had info already.
If his clothes can be made out - then hopefully even the absence of those outfits could be relevant
Hopefully there is other stuff as well. Whatever was taken from his home for example. Witness statements. Phone pings or even the absence of them within a certain time frame. Browser history and of course his apparently odd previous offences. His behavior afterwards.
I hope there is plenty to get justice. I still wonder if the time being taken could be because someone else was also involved. But I hope for Libby's family and the safety of other women that Whoever is responsible rots in jail for decades.