-2 different pairs of differential vias: BC2 (left) and BCREF (right

-2 different pairs of differential vias: BC2 (left) and BCREF (right)
-They seem exactly the same: going from TOP to the Bottom and connecting
signals from the Top to the L3
- This is the VIA extracted for BC2
- This is the VIA extracted for BCREF
Why the extracted vias are looking different ?!
The signals for BC2 are looking as well different (and bad!) comparred to BCREF