Did Hecatia ever Met eirin in touhou 15?

[Alex99inaba]

Because in Visionary fairies in shrine Eirin doesn't know about hecatia's involvment, and a other question: Is reisen extra story Canon or Is It reimu's?

[Pentastar]

generally reimu's story is cannon an exception marisa mentions beat the yama in one of the print works, so I'd say that reimu's end was cannon