At 45,000 ya, this individual is probably just inside the far range of human contact. To find evidence of interbreeding I would think they need to find a specimen closer to the 29,000 ya mark.
Neanderthals diverged from the evolutionary line that led to modern humans about 315,000 years ago. Neanderthals lived across Europe and parts of west and central Asia from approximately 230,000 to 29,000 years ago
315,000 years ago is a lot more recent than the 700,000ya figure I recall from previous research but still well before Neanderthals show up in Eurasia. It fits the picture of our small group of human ancestors living on the outer banks of Southey Africa 200,000ya and suggests that Neanderthals are/were our closest separate branch moving out.
That was supposed to be southeast Africa. Spell checker does funny things...