Probe of BitZero missing Z TLS check?

Hello, new to the community, and haven’t even run my first job yet. Just upgraded to a shapeoko5 with bitzero v2.

I noticed something that is not making sense to me when using the built in probe sequence for bitzero. In Carbide Motion when you use the bitzero sequence, after the Z probe it goes over to bitsetter and probes the tool. In my mind this makes sense if you are using the probe cylinders. But gSender does not do the tool length measurement after the Z probe. So how does it know what the actual Z offset is after a tool change? Am I missing something?

Using v1.6.4.

Aside: thanks for the wonderful software. If I knew JS i would help solve the headless issue on RPI, for now its ser2net.