[QUOTE=gnome;9783358]because of the different speed profiles in headwinds, downhills and uphills between a recumbent and upright. And the fact that you have a whopping great chainring and pedals just behind the rear wheel of an upright when drafting on a recumbent means you have to concentrate much more.

I find it is much less stressfull to ride in a paceline on a normal bike than on a recumbent.[/QUOT

The chain ring and pedals on my GRR is in the same place as a DF, between the front and rear wheel. The only time my profile changes is when I tuck my head under the fairing on downhill runs. But if you are doing 35+ mph I do not suggest talking to someone at the same time. There is a lot of road passing under you at that speed and a lot of things are happening pretty fast. I keep both eyes on the road at that speed. I have no trouble 'socializing' while riding next to another recumbent. I find that conversing with others is easier when I am sitting up in a normal position.