Some stealth platforms are just meant for testing like Tacit Blue, and as such say nothing.
The F-117, on the other hand, spoke loudly with its laser-guided bombs, but “heard nothing” as they retracted comms antenna on the riskier parts of the mission to reduce RCS.
USAF is now bringing the “see nothing” aspect of stealth. The newer F-35As delivered for USAF may have no radar. The airframes suposedly have a bulkhead that can mount a yet undeliverd radar (APG 85) and are not compatible with the current F-35 radar (APG 81) used in the earlier USAF F-35As and current export F-35As and B and C models. LM states that it will take 2 years to redesign the bulkhead so it can receive either radar set.
Such blunder has not been seen since the Tornado F2 and its “Blue Circle radar”
Explanation From Original OP: