Yep. Those hypocrites made their works public so to boast in them. I don't see how this relates to Eucharistic processions, which are fundamentally a humble undertaking, being that we boast not in our own works but in those of Christ and do so publicly.
Discussion
Had to look up what a Eucharistic procession is- what verse of the Bible can I find that discusses them?
There is none. The gospels and and epistles were written during the life of Christ and during great persecution of Christians. Eucharistic processions would only become a practice after the Church became much less vulnerable.