Sure, if you were hiring someone with no Delphi/Pascal experience, for example a programmer who had worked in multiple languages and you expected to be able to

Sure, if you were hiring someone with no Delphi/Pascal experience, for example a programmer who had worked in multiple languages and you expected to be able to learn Delphi quickly, then it would be a silly gotcha. But if you were interviewing someone who claimed to know Delphi/Pascal at all and didn't know this off the top of their head, it would be a big red flag. It would be like asking a C programmer what's the difference between "void foo(){...}" and "int foo(){...}". They had better be able to tell you the difference without having to think about it.