I've not had that experience with Salvia but I've read about what I presume you're talking about and I don't believe they are the same. 2cb feels like boundary dissolution, I'm still very much me but my edges have melted into the...couch, pillow, sheet. I think become them is way too strong of a term when compared to Salvia, I think Salvia is more towards ego replacement but 2cb is more somatic boundary changes. The 2cb effect is extremely pleasant.