Sue - yes, it could be I didn't see those hair roots, so surely the little seedling needs some damage recovery.
I damp chilled the seeds all together, 7 seeds from the same cross, for about two weeks, three germinated and the other four not. There's one that is very wrinkled maybe it's not viable. So at this point I don't know if I should put them again in fridge and wait until spring.
Mayo - those are not small pots for sure!
Frillylily - after explanations it seems that they are concentrating on their root system, so I will wait for them to grow with peace of mind!