hindi nakakapagtaka bro ang kadena. ang nakakapagtaka eh takot sila sa tubig pano nila tinalian sa leeg.
Well, they are not exactly afraid, di ba hinila nila pababa si Tormund, they just can't swim
As for putting chains on Viserions neck, well the wights are expendables baka may inutusan tumalon dun and iniwan nalang after doing the job hehe