Simple Chrome behavior: "if a.com is navigated to, also open tab containing b.com."

How do I get started doing this? I feel like it must be very easy but I don’t think the standard “if” statement actually does this from what I can see in the docs.

So if you open a.com then Kantu should open a new tab with b.com ?

Yes, that’s exactly it!

From what I know you have to open Kantu for it to start monitoring the actions on the browser. So I am not sure how Kantu will open b.com, when you open a.com (without Kantu being open already)

This IS really simple. Here is how I would code it:
STORE | TRUE | !STATUSOK
OPEN | HTTPS://FIRSTSITEURL (A.COM)
IF_V1_DEPRECATED | “${!statusOK}” == “true”
SELECTWINDOW | TAB=OPEN | HTTPS://SECONDSSITEURL (B.COM)
ENDIF_DEPRECATED

!StatusOK checks the status of the previous command (in this case, the OPEN). !StatusOk is NOT set to true by default. You MUST set it before performing each test. SelectWindow with Tab=open opens the new tab (see Selenium commands). Good luck, have fun.