Sentinel-2 tiles values

Hi all

I have some doubts about these tiles corresponding to the same area:

S2A_MSIL2A_20240103T160651_N0510_R097_T16PFS_20240103T212452.SAFE

S2A_MSIL2A_20240103T160651_N0510_R097_T16PFT_20240103T212452.SAFE

We have found that the digital level of a shared pixel of the common area in both images is different, and we don’t know the cause of it (angle of solar incidence, etc). I would be very grateful if you could tell us if some kind of radiometric (or other) normalization is necessary to mosaic both images.

Best regards and thanks in advance.

Rubén