Judge orders jury to resume deliberations after deadlocking in NYC subway chokehold death trial

The judge in the subway chokehold trial has urged the jury to continue deliberations after they reported being unable to reach a unanimous verdict on the first count. Daniel Penny, a former Marine, is charged with causing the death of Jordan Neely by holding him in a chokehold for six minutes. If found guilty, Penny could face up to 15 years in prison.

How long was Jordan Neely held in a chokehold before his death?

What could be the potential consequence for Daniel Penny if he is convicted?