I found in that directory; NR files came 3 days after NT files. My understanding is NT shall come after NR, and their sampling timestamp in filenames shall be the same. But you can see 5 seconds difference between the following two.
S3A_OL_1_EFR____20220521T003112_20220521T003412_20220525T135459_0179_085_273_2700_MAR_O_NR_002.zip 2022-05-25 14:26:37 596948088
S3A_OL_1_EFR____20220521T003117_20220521T003417_20220522T004931_0179_085_273_2700_PS1_O_NT_002.zip 2022-05-22 01:49:46 599880072
For this case, NR and NT, which is the mostly updated? Please advise.
It isn't clear to me why ESA would reprocess a Near Real Time granule 4 days after real time.
They may have been testing something internally and published it by mistake.
I would ignore the NR granule.