Are they the same type? I'm not responding to argue, but do technologies like GLONASS, GPS, or Galileo operate over each other or on different wavelengths or frequency, or whatever they use?

Even when someone jams your WiFi you can still use WiFi by switching to a different frequency. I don't know what range of frequencies are available to GPS systems but I'd imagine they're broad enough that one can operate while the other is jammed.

If you want to jam anything you need enough power to produce a strong enough signal to overwhelm the target's receiver. I found the formula that lets you calculate how much power you'd need. In the example on the website the guy is trying to jam a radio 300m away. They need 7 watts to make 1db of noise. The power you need increases exponentially with the distance and with how much noise you want to make. That's why I can easily see this going into the millions of watts when you want to jam the GPS of an aircraft 10+km away.

That's possible for one frequency but as I said, GPS most definitely has several frequencies it operates on so jamming all of them at once might not even be possible with current technology.

Which implies they were spoofed rather than jammed.

That is odd indeed.

The aircraft's transponder reported good GPS signal quality from take-off to landing.

Based on the ATC audio, the crew switched from the GPS-based approach to the ILS approach, necessitating a change in the flight path

These two things just dont add up

There isn't much information in this article, but I wouldn't be surprised it was spoofing not jamming.