I fully support and agree with your post here as it pertains to those in full communion with the Church.
My previous post addresses the OP’s question of the lord’s supper and a communion. More specifically I am addressing a faith in the real presence (Lord’s Supper) and in the Eucharist a full Communion.
To use some of St. Paul’s biblical words here; that deals with infant Christians who are still on the milk of faith, compared to those mature Christians who are able to eat the meat of faith. I pray not to offend any readers or posters with what I am going to relate here as an example.
These infants “by no fault of their own”, as the Catechism states. Some possess and display a faith in Jesus real presence that may equal or surpass some “infant” cradle Catholics. Yet, “by no fault of their own” remain separated brethren.
Jesus gives many teachings on how we are to treat such infants, “for their’s is the Kingdom of heaven”, “do not despise one of these little ones”, lets’ not forget the warning from three gospel recordings; to those who keep these little ones from Jesus or cause a little one to stumble, “it is better to tie a millstone around his neck and cast into the sea”.
Faith in the real presence, as an infant can be a profound faith, like the Roman Centurion. That same faith we as Catholics profess in the Eucharistic Liturgy of the Mass, “Lord I am not worthy that you should enter under my roof, but only say the Word and my soul shall be healed.”
It was St. Paul’s prayer that all Christians should eat the meat of faith. Here I will conclude my opinion to the meat of faith is full communion in the seven sacraments. Some infants may have only one or two sacraments, I pray with St. Paul , how I pray that we all be mature and eat the meat of faith in full communion at the Lords Table.
Peace be with you