The amount of time for digestion misses the whole point.
We receive Christ’s grace through the Sacrament of the Eucharist.
In the Mass, we offer ourselves along with CHrist to the Father on Calvary since the Mass is One SIngle Sacrifice on Calvary made present to us in time.
When we eat His flesh and drink His blood, we have life within us as it says in John 6:35-67.
It is through the Sacraments that we partake in Christ’s divine nature (2 Pet 1:3-4). When we accept the Sacraments through faith, we accept the transforming power of the visible signs that unite us to Christ.
This isn’t hocus pocus magic. The Eucharist is mystery.
CHrist says that His flesh is real food and that his blood is real drink. We believe CHrist when he says this and accept the Eucharist in faith, trusting what he said.
The reason so many disciples left Jesus in John 6:66 is that they could not accept the real presence, that his flesh was to be eaten and his blood drunk.
People don’t leave over symbolism.
Those disciples knew exactly that Jesus was speaking literally and could not accept what He said.
As Catholics,we affirm what Peter says.
Lord, where else would we go. YOu have the words of eternal life!