I can honestly say I didn't anticipate someone on Lemmy actually pulling a Book of Order reference (and I was way too lazy to look it up this morning).
Also, I think the Baptists also believe in one baptism (but again, only believers, so infants who were baptized need to be re-baptized for Baptists to recognize it). So I guess no double dipping Oreos for either.
There is a communion practice called "intinction" where the bread is dipped in the juice/wine. Probably not common in traditions that use "host" (crackers, but actually closer to styrofoam), but it is a thing.