So not only do they have by far the most 1&2 finishes already, if I didn't overlook anyone, Hinault & Lemond are also the only other pairing with multiple 1&2s where the winner was not always the same one. You know, it's always a little hard for me to compare Pogacar vs Vingegaard to Ullrich vs Armstrong when there was literally 1 Tour where the duel between them was even remotely close. Also I always find it interesting that although Ullrich is seen as the guy whose path to greatness was blocked by Armstrong, he actually finished right behind Armstrong in less than half of his victories.Let's compare this rivalry with other notable Tour rivalries. Number of times a given pair of cyclists was together on the Tour podium:
Pogacar & Vingegaard: 5 times (5 x 1&2)
Armstrong & Ullrich: 4 times (3 x 1&2, 1 x 1&3) (results voided)
Anquetil & Bahamontes: 3 times (2 x 1&3, 1 x 1&2)
Merckx & Poulidor: 3 times (2 x 1&3, 1 x 1&2)
Hinault & Zoetemelk: 3 times (3 x 1&2)
Hinault & Lemond: 3 times (2 x 1&2, 1 x 2&3)
Armstrong & Beloki: 3 times (2 x 1&3, 1 x 1&2) (results voided)
Froome & Quintana: 3 times (2 x 1&2, 1 x 1&3)
I think you can call Pogacar vs Vingegaard the greatest rivalry in the history of the Tour and it's not at all a hyperbole.