Haha. At some companies, they made the interviews tougher for internal candidates... Amazon used to require full loop, but last time I changed jobs there (I no longer wok there), all it took was conversations with some senior engineers, and somebody reviewing my work sample.
And totally agree with the absurdity of the questions we ask in tech interviews. At least for my current employer, we use simplified versions of real problems we faced in the past, and place more emphasis on how they communicate, rather than just throwing some leetcode medium/hard problems, and let candidates self select based on how much prep work they put in.
Well, there's really two ways it works at my company. The other way it works is managers making backroom deals and then it's just some conversation with the tech lead that counts as the interview for HR's sake. So sort of similar to what you described.
I wanted to ask the interviewer if they actually use these terms in meetings or used the algorithms, but I didn't. Since it was internal, I already knew the answers would be that they didn't, and I didn't want to appear confrontational.
I was internal, a high performer on my team at the time, and you're going to ask me this useless stuff?