They are cousin brothers. 
Okay, I'm kidding. @hilariousetc is the alternative account of @hilariousandco. Or, @hilariousandco is the alternative account of @hilariousetc, but I think the first one is correct assuming @hilariousandco was created before and is in the DT, or has been a part of DT for a longer time, because I'm not sure if @hilariousetc is in the DT or not.
Thanks for the information. I am keeping it simple meaning they are alt to each others.Okay, I'm kidding. @hilariousetc is the alternative account of @hilariousandco. Or, @hilariousandco is the alternative account of @hilariousetc, but I think the first one is correct assuming @hilariousandco was created before and is in the DT, or has been a part of DT for a longer time, because I'm not sure if @hilariousetc is in the DT or not.
I think that's unlikely as hilariousandco was the first username I spotted (moderating bitcoin discussion) and hilarious is quite a common word.
They seem to be seperate people (but maybe I'm wrong)...