Hi @pinter , take a look at this thread:
https://www.twit.community/t/how-are-ads-inserted-into-my-podcast-feed/9518/8
TWiT has been slowly switching audio shows to Megaphone, who insert ads into slots that haven’t been sold directly by TWiT and chtbl to track the downloads.
I had the same problem a while back. I have a PiHole with some 2.5 million blocked tracking and malware domains. I ended up whitelisting chtbl and megaphone, so that I could download the podcasts - as I only download TWiT podcasts and these domains are only used for podcast tracking, I white listed them for TWiT’s sake.
I wish @Leo and TWiT would put up an FAQ about this, either pinned here in the forums or on their main site as this issue seems to crop up every couple of weeks.