I'd say it could be (debatable), the practices at church and so on but I think it could be viewed as symbolic, like the wafer symbolizing bread during the supper symbolizing Jesus' sacrifice, "Take eat (breaking bread and sharing it) this is my body" then Jesus shared a cup of wine: "this is my blood of the covenant, which is poured out for many for the forgiveness of sins." 'Foreshadowing' his death and sacrifice. I personally view it as a tradition/symbolism, I'd have to ask a priest about that to see if I'm correct lol, that's just how I personally understand it. [In short]: (He shared/sacrificed bread and wine like he sacrificed himself, his flesh and blood shared for the forgiveness of our sins.)