A:Answer I am not sure why you would want to try this (cant hold both flashes and the camera or remote?), but if you want multiple flashes, the hot shoe cord is pretty short. However, the technology you should consider is A wireless or slave trigger. This is a feature of the flash unit, and it's a system that fires the flash whenever another flash goes off.
You place the flash on a stand and put the stand wherever you like - there are no wires connecting the camera to the flash
Set the flash to slave mode
Pop up the built-in flash on your camera and take a photo
The minute the slave trigger detects the light from your built-in flash, it fires the flash sitting on the stand.
Something to look into. Hope this helps.