So similar I can’t tell them apart

When I picked these periwinkle pretties, I thought I was gathering chicory (non-native but tolerated). But my trusted MN Wildflowers source says it might be Showy Blue Lettuce (native) instead. It says the two plants are VERY hard to tell apart. And I have to agree. Even with a sample in my hand and multipole descriptions on the internet, I am not sure. Any experts out there?

chicory (Cichorium intybus) or showy blue lettuce (Mulgedium pulchellum) ?