Reading your post re your ‘non smart’ TV - it would appear that you are ahead of the curve… It reminded me of discussion generated by Best TVs - review - #9 by person - in which the value of “smart” TVs was discussed.
I don’t know if this is of any help in your situation, but it has made me aware of issues that I hadn’t previously considered: it will be a ‘dumb’ TV for me next time I need to buy…
