[HeyLaughingBoy]

Many devices put the data into the Manufacturer-specific part of the advertising packet. It's a workaround. The problem is that it's non-standard so if you're a provider of data management for group fitness you have to have custom code for each manufacturer (and sometimes different devices from the same manufacturer). And it's especially fun when the manufacturer's published data spec doesn't match what the device actually puts out!

I don't know how difficult it would be to connect, grab a bunch of data and disconnect from 24 BLE devices in a one-second period, which is pretty much what you'd need to be an effective workaround for ANT+. In a competitive environment, data from each device changes very rapidly.