No, I don't believe they were.
I believe Genesis 2 and 3 talk in symbolic terms about a spiritual place long before Homo sapiens existed. Adam and Eve, there, were symbols for all of us as spiritual children of God.
God said that Adam and Eve would die on the day they ate of the Tree of Knowledge of Good and Evil. But did they literally, physically die? No. In fact, they were escorted out of the Garden.
I believe that Adam of the Garden was not the Adam of Genesis 5. In fact, Genesis 5:2 says that Adam was both male and female and plural (a "them").
But the form of "Adam" in Genesis 5 means all of humanity -- the first tribe. And that first tribe gave birth to other tribes, like Cain, Abel and Seth.
The seemingly outrageous longevity of the early patriarchs had always bothered me. How could Adam have lived to 930 years of age (after his supposedly instant death sentence in the Garden)? And how can the Genesis timeline be real if scientists find that humanity has been around for at least 200,000 years? The Genesis timeline is too short, and the ages of those patriarchs are already too long!
Solution? The ages of those "patriarchs" need to be extended by some factor to be found in Genesis and the names and ages of those "patriarchs" apply to their eponymous tribes. The names may also apply to the founders of those tribes.
I discuss this in more detail in my series on Genesis.