Read the old post made by theymos, for more information.
The forum was originally located at bitcoin.org/smf, then forum.bitcoin.org (hence the redirect), and finally bitcointalk.org.
I did not know about that post of theymos but now I know it, thanks.
Theymos mentioned about it again in 2020 when the owner of forum domain separated from bitcoin.org domain. No cross relationship with Cobra after that.
Satoshi created both bitcoin.org and this forum, whttps://bitcointalk.org/index.php?topic=5186820.0#post_domain]hich was originally at bitcoin.org/smf. Later, the forum got its own domain name
I am going to update
Bitcointalk's important historic changes as I see some new information from you.