Been watching a lot of videos on ancient and medieval weapons like swords, maces and shields. The whole concept of the Bronze Age and Iron Age fascinates me, but got me thinking, how much overlap you have in these time frames and cultures. In the middle of the Bronze Age did people still flint nap rocks if convenient? Did bronze swords ever inter-mix with iron age ones? Did people ever down grade from an iron sword to a bronze one if the first one broke? To make a modern example I have a friend who can start a fire buy rubbing sticks if he needs too, but when we camp; he uses a bbq lighter and diesel fuel.
Answer: Absolutely yes. Flint knapping continued even into colonial times (had to shape those flints for flintlock pistols somehow). I've excavated serrated flint "razor" edges (probably used for harvesting crops, etc) from Iron Age (~1000-800 BC) sites in southern Israel.
Bronze continued to be a popular metal in the Iron Age. Just because it was the Iron Age didn't mean everyone had to use iron, bronze was still popular for many types of artifacts, from jewelry to fasteners, to pins (including structural components for chariots) to medallions, even to weapons. In the tenth century BC, well into what we call the Iron Age, the ratio of bronze weapons recovered to iron weapons recovered is roughly 50/50 (Gabriel, R. A. (2003). The military history of ancient Israel. Westport, Conn. [u.a.: Praeger, p. 117). It's been speculated that it was the relative difficulty of obtaining tin for the bronze that first drove people into using iron for weapons in the first place (it had to be imported from as far away as Afghanistan).
So all the technologies persisted for quite a long time, slowly adapting into slightly different forms, and coexisting for some time as well.