User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170407023114/@comment-31137559-20170407101555

And we have to consider that the three factions are at peace now. It was most likely that Lint was the most compatible with the Incinerate Anthem or something like that. Issei had no connections with Heaven but he was given Ascalon and it was even adjusted for his use. And Heaven reforged Excalibur and gave it to Xenovia. There has been collaboration between the factions as we've seen. Lint might have helped the Grigori out or something.