Maybe combine the two - Have the applicant do a small task then talk about it. Maybe give them a slightly dubious direction then see if they followed to the letter or deviated and their reasoning for it.

I am having an interview next week and I hope it will be going like that. They emailed me yesterday with a small coding task. I was supposed to setup a simple server updated website with blazor (horrible name) using (a) Background Worker for the Server side "computation" that updates the page with a random number every X seconds.

Even not having worked with asp.net directly ever it was fairly easy to setup and implement. The complexities are rather well hidden by dotnet. But the use of the BackgroundWorker class seemed weird to me. In fact I implemented it first with a simple timer instead before noticing the ambiguity in the task description. So I implemented it both ways. I think I spend less than an hour on it and thats nice cause it respects my time :)