The communication feature is separate from basic zone heating. Pairing, compatible equipment and settings can affect the linked function.
What the observation means
A hood problem should not automatically be described as an induction power failure. This repair service's exclusions also need to be respected; hood work is not implied by a hob enquiry.
A useful next step
Use the manufacturers' pairing instructions for supported equipment. Record which local controls still work and which linked action fails. Do not open either appliance or modify wiring to restore a wireless or control-link feature.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.