The Formula1 site has all the on and off car footage: https://www.formula1.com/en/latest/article.must-see-huge-drama-at-silverstone-as-verstappen-crashes-out-after-contact.5TYpA4sgotEd2OWVYU2lKg.html I think that Hamilton was giving way to Verstappen, see the rear view from the Red Bull car at: 0.50     Before that he had at least half a car of overlap, which does give him the inside line, but he was being cautious. And then, Verstappen turned in on him, see the overhead view at: 1:30