There's no way a competent hiring manager would ask someone to come in for a "couple of hours" to meet the team, and then ambush them with a full-on technical interview. This would not lead to a successful outcome.

I think from the context of the entire article, you need to read between the lines and assume that it was obvious to both the candidate and the hiring manager that the next step was a full technical interview. The hiring manager was simply wording it in a way that sounded less intimidating.