Download the free app
https://carseatblog.com/9226/what-is-a-tether/#more-9226
I have been reading this blog for 2 years now to keep me up to date and updated about car seat safety, thought I would share.
I just skimmed, but I don't think this article adresses rear facing tethering, which is what the OP was about. Only certain Britax models and Sunshine kids carseats allow for rear facing tethering.
Re: F/U: Is your carseat "anchored"? (LIP)
I just skimmed, but I don't think this article adresses rear facing tethering, which is what the OP was about. Only certain Britax models and Sunshine kids carseats allow for rear facing tethering.