I'm probably 25 years late to this, but that feeling when 10base2, and 10base5 are able to talk to each other just fine if you manage to connect them together. It is
Ethernet 10Base5
10BASE5(ケーブル規格) – セラクコラム
Building a 10BASE5 "Thick Ethernet" network
Building a 10BASE5 “Thick Ethernet” network – Matt's Tech Pages
10BASE5
10Base5 - Thicknet or Standard Ethernet - The Network Encyclopedia
Building a 10BASE5 “Thick Ethernet” network – Matt's Tech Pages
02 Evolucion Ethernet 10BASE5 10BASE2 03 hardware
10Base5
Building a 10BASE5 “Thick Ethernet” network – Matt's Tech Pages
10 Base 5 - What is 10Base5 (Thick Net/Yellow Ethernet)? - Computer Notes
10Base5 Ethernet Vampire Tap | Yes, Cray-Cyber.org is still … | Flickr