Last week, Apple Inc. (NASDAQ: AAPL) and Aetna (NYSE: AET) employees sat down to discuss an interesting idea: provide free or low-cost Apple watches to everyone covered by an Aetna health-insurance plan. No one is saying how the meeting went, but if the two companies strike a deal, it could be a big win for the companies and, more importantly, the health of Aetna’s members.