And as you believe that you alone have the truth, anyone else is wrong/suspect/belongs to a church that does not have the truth (therefore, by definition is untrue.)
That sir, is a matter for you to figure out.
I don't have to use my
female brain to figure out anything.
If you came to our church, we would welcome you.
If it was a communion service, our Minister would say, "this is the Lord's table; anyone who loves our Lord is welcome". If you indicated that you wished to receive communion, you would be offered it and would share in the body and blood of Christ, just like the rest of us.
I suspect that you would not come to our church, even if it was right next door to yours.
I suspect you would not accept there being a female Minister, and either you would refuse to accept communion, or you would want a doctrinal statement about what we believed about the body and blood of Christ.
I have been to a Catholic church and on a Catholic retreat where, they claimed, all denominations were welcome.
In the Catholic church I was welcomed - but quizzed by a member of the congregation about why I did not believe Jesus when he said that the church would be built on Peter. I was not offered communion. Had I tried to copy the others when we went forward, I suspect I would have been humiliated when they refused to give it to me - because I had already been publicly identified as a Methodist Preacher. (I was giving the sermon that day but was only allowed to speak once the service was over.)
On the Catholic retreat one of the nuns spoke to the priest as he came round and said I was a protestant. He passed by without looking at me.
I don't call that unity.
But I already know what the issue is - you're right and we're not, therefore, no fellowship.