What I find odd is that, if the other church is in schism, then the Catholic really has no business taking communion there in the first place for any reason **unless it’s some sort of emergency **
Yes, that’s exactly what the Church says. I already posted Canon 844, but I shall post it again.
Can. 844 §1. Catholic ministers administer the sacraments licitly to Catholic members of the Christian faithful alone, who likewise receive them licitly from Catholic ministers alone, without prejudice to the prescripts of §§2, 3, and 4 of this canon, and ⇒ can. 861, §2.
§2. **Whenever necessity requires it **or true spiritual advantage suggests it, and provided that danger of error or of indifferentism is avoided, the Christian faithful **for whom it is physically or morally impossible to approach a Catholic minister are permitted **to receive the sacraments of penance, Eucharist, and anointing of the sick from non-Catholic ministers in whose Churches these sacraments are valid.
I can’t see why the Church is ok with them taking communion in a schismatic group and yet they must also go to the Catholic parish to fulfill the obligation.
The Catholic must meet the requirements of Canon 844 in order to be doing so. For example, no Catholic Church is available-- maybe someone is in some other country where they can only attend an Orthodox Church b/c there is no Catholic Church. In such a case, they actually have no Sunday obligation because there isn’t a Church to attend. If they had some compelling reason to ask for the sacraments-- maybe Reconciliation b/c of moratl sin-- they could do so. If they don’t have a reason that qualifies under 844 they could still attend Divine Liturgy but shouldn’t receive.
In cases where, for example, a Catholic is married to an Orthodox (or a Presbyterian, or whatever) the could **attend **the *Divine Liturgy *with their spouse (or *service *in the case of ecclesial communiteis) but they should not present themselves for communion (since they don’t meet the criteria of canon 844) and would also need to attend Mass.
If the Eucharist is not only the body, blood, soul, divinity of Christ Jesus, but also the ultimate sign of unity, it’s odd to allow a Catholic to partake of a Eucharist that is not in alignment with Catholic unity itself. And if it doesn’t fullfill the obligation, then don’t allow it at all. If it is not in the unity of the Catholic Church, don’t partake. I guess I’m a simpleton here.
It is allowed for the reasons under 844 b/c no one should be left without viaticum, or spiritual nourishment if they have some grave reason and are unable to access a Catholci priest.
Sorry if you were interpreting me to say a Catholic could receive in a schismatic Church any old time they want to, that is not what I was saying at all. My starting premise was that they already met the canonical requirements of 844.