And how would angels minister the sacraments if they have no bodies?
If this is possible, then, Baptism of Desire could be said to be a kind of Baptism performed by angels on those who truly desire it and are not able to receive it from a human minister.
It sounds strange to me. If this is so, how have we never heard this explanation?
You can simply read the words of St Thomas Aquinas on angels, here :
https://www.newadvent.org/summa/1051.htmAs for the reason why we never heard of this explanation... We did. From St Thomas Aquinas.
I personally think that the theologians who wrote about "baptism of desire" were confused. They knew that God would not let such people go to hell, but they didn't know the exact mechanism that God would use in order to prevent such an outcome.
For such a subtle error, it is quite possible for many theologians to not notice it.