Is it typical for salary negotiations to take over two weeks?

I interviewed with a company and received a job offer two weeks ago. The recruiter mentioned that the hiring manager was quite impressed with my qualifications. However, I discovered that the top salary for the position was actually $11k lower than my current pay, which the recruiter hadn’t mentioned prior to the offer. I decided to negotiate to see if they could match my current salary instead. The recruiter seemed to anticipate this discussion and told me that the hiring manager would likely have some flexibility to work with me, promising to get back to me soon.

Now, two weeks have passed and I still haven’t heard anything. I followed up with the recruiter last week, and he said he expected to have an update by the end of the week, but I still haven’t received any news. I’m starting to feel frustrated with the lack of communication. Is this delay in the negotiation process normal?