I bought Pixel 6 after using Pixel 3a. "On paper" size-wise it seems nearly the same (1mm+ in each dimension) but in reality I feel like having a brick now, to the point I still prefer using my 3a on the go.

I didn't realize but 147g vs 207g makes for an enormous difference. Also 1-2mm in each dimension and now it can't fit my pockets anymore.