Yes, I’m perfectly willing to say TOUCH OF EVIL (or IN THE HEAT OF THE NIGHT) is more blues than jazz… as you said, the boundaries are not set in stone, they are fleeting. What is “jazz”? Louis Armstrong (my uncle was a big fan and had lots of his music recording) once said “If you have to ask what jazz is, you’ll never know”, but of course, one has to define it in some way to distinguish it effectively from something else.