Are y’all in the same religion? If so, which one is it?
Yes we are. It's the universal ekklesia, the body of Christ consisting of all those who believe and trust in Christ alone through faith alone. Those who are cleansed by the all sufficient shed blood of Christ forever called saints and who are called "children of God" and can with boldness approach the throne of God in Jesus name.
Probably not. I don’t know for sure because I don’t know what fellowships they attend when they assemble with other believers.
We’re born again believers in Christ and the agreement we have is not due to doctrinal adherence to church statements of faith but our agreement with Scripture, something that Catholics say cannot happen with those who adhere to sola Scriptura.