Bank Financing Loan Assumption

Has anyone ever assumed the existing bank financing from the seller? Imagine this is difficult and doesn’t happen very often but was curious if anyone had seen it. Imagine it would depend on whether it’s recourse of non-recourse and I’m guessing it’s recourse so the answer will probably be no. My best bet is going to the existing bank but I’m a little worried that if the seller has a decent relationship with the banker he’s going to tip him off that he’s selling these for far too cheap.