So Pieper is a bit worried that Vinge might have more in the tank than Pog in the 3rd week. Why he thinks this is not said out loud, but there seems to be two reasons: 1) Due to Pog's "overconfidence" he might ride too hard the first two weeks, 2) Vinge is probably more rested than Pog due to Pog's tough spring campaign.
If he has a point I'm not sure. Pog has such a high level that he wins even when he isn't at his highest level. And we thought he was tired after Amstel and then he crushed the competition in FW and LBL.
Still think that the thing must happen for Pog to be challenged in the tour is that Vinge reaches a higher level than he has ever shown before. Then maybe slight more tiredness can have crucial effect.
Yeah, I think by the tank stuff he means Pogacar had a monster classics campaign. As for overconfidence, Peiper knows the guy like few do, so I guess he's right to some extent. Peiper gave some past examples but this year maybe he means by this the spring schedule, as for the Tour itself Pogi obviously regards Vingo as a big threat (definitely no neglect).