Worth noting that even in the film, XXX Corps doesn’t say ‘right, we’re over the bridge and now we’re going to stop and have tea’ – it’s the US Airborne who accuse them of doing that. The reason the tanks stopped there was because they were waiting for infantry to come up the road to support their advance

The film is not a documentary and not correct. The few tanks that crossed stopped near Lent just north of the bridge. Here they met a platoon of Americans when it was dark. The crossing of the bridge happend late in the afternoon. (No American were at the bridge) The Americans (about platoon size) although very happy to see the tanks, they even kissed them, did not wished to guard the tanks at night and withdrew to other positions.
The tank crews had to guard the tanks without any support that night. If the German had counter attacked that night they could have got the bridge back.
The next day with the infantry support and other tank units they went on to Elst.