I see nothing to confirm a birth year in the two overview factors, though one might reasonably be inferred that meshes with currently showing familial factors.
Comgall's father's MP shows a birth at circa 465. Brother's Eochaidh's and Gabrán's MPs show birth years of circa 502 and 507 respectively.
It seems reasonable to either posit that Comgall was born between his two brothers Or to remove a birth year.
Just a thought.
Cheers,
Ken Shelley