Note, it is only out of necessity that Catholics can attend....just like if, I was in Russ8ia, it was Sunday and through no fault of mine own, could not get to Catholic Mass, could possibly attend Orthodox, though the Russians are very anti-Catholic, could attend and receive as it is a schismatic congregation, but, the liturgy and sacrements are valid and they are of Apostolic origin......
Not sure who these Assyrians are, but sounds like they re generally, orthodox and indendant of the Pope...necessity only would make one go...
the lack of consecration words are troubling, but one has to wonder and study..that is why we have an authoratitive church though ,t oguide...