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Garmin AXIS, Next Generation Integrated Flight Display

Question for @g3xpert-

I am trying to understand the fail safe audio in A.1.5.13 of the install manual and the interconnect diagrams. Just want to confirm that in the unlikely event that the internal audio panel fails, the pilot's left headset, mic, and PTT are connected to whatever is wired as AUX1 (whether it is another Axis device or an external COM). Can you confirm? Is there an interconnect diagram I'm missing?
 
Please pass on that I’d like the option of the GTN 750Xi user interface to be modded where it can be such as adding the radial pop-up menu on the GTN so it’s as similar as possible to operate as the map interface is when Map is used on a Axis display for consistency.
 
The available tube videos for upgrading from G3x to Axis seemed a lot more involved than my easy swap expectations. It looked like there might have been 4-5 owner/shop personnel working on the planes along with 2-3 Garmin staff for install and it took 3-4 days. Even just calling it 40 hours of labor @ $125 per hour would be 5K to pay someone to upgrade. They also seemed to put in dual IFR GPS units without discussing reasons for such.

The upgrade for my other brand PFD was quite simple. Download everything to USB. Unscrew and unplug, replug and re screw, turn on and download all files. Maybe 30 minutes.

Why spend the money for two IFR GPS when it could be so easy to pull out a phone/tablet and run FF or GP as back up?
How little time might it take for a G3x to Axis upgrade?

Why the Axis name and is it related to the Axis boating products used by that one brand of boats?

G3x has been a great product. Ignoring the widgets, is there a way to compare the compute power or processing speed of the two? Perhaps a chart comparing them? What makes this a huge step change as opposed an apple iPhone 16 to 17 upgrade situation? ( I looked at phones yesterday)

Can this be configured to show flap position?
Trim position?
Door not latched annunciator?
 
I noticed a deluge of G3X touch screens going on sale on the classifieds. Are builders dumping them so they can upgrade to the new Axis units. Nothing wrong with that, I was just wondering.
 
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