Yes, we can.
We can hear typing in the background during an interview screening phone call.
Which leads to instant disqualification.
Some better alternatives might be:
“I don’t know, but here’s what I think”
“I’d have to research that”
“I’ve never had that experience before, but I’d love the opportunity to learn”
“That’s more advanced than my current skill level, can we explore different areas that I’m more experienced in?”
To be clear, the questions we’re asking are usually tied to what we’re seeing on a resume.
Please be sure what you have stated on your resume can be spoken to in detail.
If it requires you Googling it when asked, I’d suggest not having it.