Back when I was in Google Netops we had a healthy (unofficial) fear of having the backbone connect all the way around the world in a circle, especially with high-enough bandwidth links that both directions would start to look attractive to traffic management.
I imagine TheSockStealer was wondering about India to Iran ping time through Google's private network (the one in the diagram upthread), which doesn't appear have a connection from Chennai to Amsterdam.
The packets in the trace you posted were presumably routed by someone besides Google. Or did you run that traceroute from inside GCP?
Or I could be misunderstanding the diagram and maybe Google has some connections that aren't shown. I don't really get what the ">100" in "edge points of presence >100" means in the legend.
