I think neck problems and recumbents are complex.
Best resting position when upright is neutral.
Held positions at extreme range are often harmful.
And then there is the effect of gravity, and the mechanics of weight and leverage.
So when recumbent somewhere between neutral and bending your head forwards. The way we bend has many variables. Like with your eyes, from the top of your neck (atlanto occipital joint,) from lower down in your neck.
I prolapsed C5/6 disc, I believe from a combination of hitting a speed bump at 20mph ish, on a QNT,--felt something--and 40 mins later, lifting a light weight above head height; felt a bit of a give. I have numb index and ring fingers.
Riding my B1 or QNT does not aggravate my symptoms. All round suspension of the QNT I think helps 'cushion' my spine.
