If quod were a conjunction here (which it isn't) and if it introduced a substantive clause (meaning "(the fact) that"), then that clause would presumably have to be the direct obect of para (which therefore wouldn't be intransitive). If quod were a causal conjunction meaning "because", then the quod clause would be adverbial rather than substantive (it wouldn't be playing the role of a noun).And if quod is a conjunction, then Para would be intransitive, and cœnem a substantive clause.