Originally Posted by
Mehrunes
Except chains could have been brought off-screen since we have no idea what supplies the huge-ass undead army carries while the other one doesn't make sense either way.
Especially in a cold-ass frozen wasteland where its cold enough for Thoros to freeze to death and others mentioning the risk of freezing to death as well. Then there's the things like the fact they brought almost no supplies with them, yet other than the cold none of them was particularly complaining yet, so it couldn't have been that long.
Look at all dem people asking for a scene of travelling ravens. There are legions of them. The only problem with their presence it's that they are made of straw. Meanwhile in the no-straw world, the issue is that even if they made full 24 episode spin-off about this raven, the whole thing would still remain unfeasible.
God forbid people expect a story not to break suspension of disbelief and make sense.
Hell, some of them even jumped out of the water and grabbed Tormund. They didn't seem too bothered by it. Besides, the undead of GoT seem to be more of a swarming kind, so they could have made a huge-ass pile like in World War Z. Maybe not as over the top, but you get the idea.