Ronan's thoughts over at EC: https://escapecollective.com/...-tt-bike-and-helmet/
Peak Torque's thoughts on YT:

In the photos of those, and ones I have of my rim brake bike, one thing that seems "the same" that I've never understood is the angle of approach of the basebar to me on a Trinity always appears "nose down" versus perfectly level to earth.

I've measured this so on mine in so much that with angled "super extensions" with the adjustable spacer that shows the angle, you have to angle up more than it says to get an iphone or actual level to read the same value.

This photo:

What the hell. That is clearly nose down. Makes me worry even more wrt descending technical courses

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That bike is racked with the back wheel of the ground and the front wheel on the ground.

Def. nose down, assuming the seatpost is vertical when the bike is lever (which it should be IIRC). The bar is level in the pics on the Giant site, so this may just be a setup issue/choice.

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Another image with the back wheel of the ground?
Is this some sort slowtwitch blindness or inability to to understand if something isn’t horizontal one end is lower than the other?

That's the point of the green rectangle. It illustrates the angle between the basebar and the seat tube (doesn't matter if the bike is tilted, since the angular tilt will be the same for both). Since we know that the seat tube should be perpendicular to the ground when the bike is level, this allows us to determine the angle of the basebar when the bike is level.

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ECMGN Therapy Silicon Valley:
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Yet you can see clearly from the horizontal line at the bottom of the image that the front wheel is on the ground the rear wheel is not and the front wheel is much lower than that horizontal line and also nearer making your box totally pointless as this is not a side on image…

Do we, though? The top tube on this frame appears to be upward sloping, much like the TCR, based on other photos I've seen of Plapp on course with it.

New TT lid interesting with that little valley in the centre.
As for the bike looks complicated to fit perhaps but I’ll reserve judgement till details come out. As for general looks it’s ok I guess no real wow factor but fairly simple? Integration be interesting

My old rim version: level, nosed down. Nothing to adjust, can see it in the brake and the pad width mount.

I measured it on level ground with a level.

I do realize it in the photos there is a rear wheel stand. My bike photo was on level ground leaning on my car. In my shed leaning on the wall no bike stand I have to adjust the extension tilt like 2 deg more than I want to get it actually to measure the same.

Just first look here I thought “dang not again” but guess it is level.

Why should the seat tube be perpendicular to the ground? I’ve actually never seen one that’s perpendicular (as in 90 degrees) to the ground. On a tri/TT bike it’s usually closer to 78 degrees.

The Trinity is designed with a vertical seatpost (see below). The effective seat tube angle is less because the seatpost is set behind the bb.

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ECMGN Therapy Silicon Valley:
Depression, Neurocognitive problems, Dementias (Testing and Evaluation), Trauma and PTSD, Traumatic Brain Injury (TBI)

I Learned something today! Thank you