I could name you lots of decent, upstanding people who, every Sunday, take a sip of wine and believe they are drinking the blood of Christ which absolves them of their sins, for example.
So, we’re talking left footers here, transubstantiation.
Who don’t think that communion (whether of bread, wine, body or blood) wipes away sin. It’s confession that does that. Indeed, you’re rather supposed to go to confession before taking communion so as to be free of sin when you do so….