Only 1 sensor of each type can be read by Telemachus

[Row-Bear]

Using KSP 1.9.1 and Telemachus 1.7.64

Make a command pod with telemachus antenna and add 2 sensors of the same type.
When the oldest sensor is activated, Telemachus does not receive its value.
When the newest sensor is activated, Telemachus gets and shows the value.

[StoneBlue]

By oldest/newest, i assume you mean during placement in the editor?

So, for me, it seems TM picks up data from which ever sensor is initially activated...
NOT by placement order in VAB/SPH