Protestant commentators do not agree with one another. If they did, there would not be so many sects, often using the same denominational name. As a cradle Baptist, I well remember times in my youth when we were feeling somewhat superior to another Baptist church in our part of town, one in which we shared some events, that had some different teachings. We were one and yet we were not one. We, not they, had understood the Bible correctly, or so we thought.
Some teach that one cannot be saved without having been baptized. Others teach that salvation is granted upon reaching a saving belief. Some believe that the Bible commands baptism. Others believe it is an optional devotion. Some believe that Saturday is the holy day while most believe that Sunday is it. Some ordain women while others believe that women must never speak in church. Some hold dances at social events. Others believe that all dancing is totally sinful. Some accept moderate use of alcohol while others quote the Bible on strong drink. Some marry those who were divorced while others refuse. Some allow divorced clergy. Others would never hear of it. Some believe in a clerical hierarchy while others do not. I could go on and on, but you get the picture. Unity of belief is not a mark of Protestantism. If it were, there would not be Protestant churches of the same stated denomination sharing a common property line. That is no joke. There is a pair like that near my old home. Otherwise, one can see them on opposite corners.
We most certainly did not honor other baptisms. People who came from other churches were baptized again unless they came from another church of like faith and practice.
We went to church Sunday morning, Sunday night, Wednesday night and occasionally other times. I cannot remember ever hearing ECF anything until I made my trip across the Tiber. It was always nothing but KJV and writings by preachers going back no farther than Moody.
ECF would have been given no more weight in our teaching than would have been afforded the preacher down the road.