Is it correct to say Bible has 2 eyewitness accounts (Matthew, Mark and Luke as comprehensive one & John being the other) of Jesus Christ's lifetime?

Since the Synoptic problem indicates that the Synoptic gospels form a comprehensive view that gives a holistic perspective, therefore, bible readers can Not use the argument that the 3 gospels of Matthew, Mark and Luke are 3 separate eyewitness accounts of Jesus Christ's lifetime. I emphasize can Not because if we consider all the following Hypothesis and models associated with the Synoptic gospels then we have to take into account that: -one of the gospels was a source for the other two gospels Or -two of the gospels was a source for one of the gospels Or -one of the gospels and some other Q source(s) were a the sources for the other 2 gospels and so on and so forth.............. Two-Source Hypothesis [Mark-Q model] Four-Source Hypothesis [Mark-Q model with M and L] Mark-Q Theory with Proto-Luke Proto-Matthew (and Proto-Luke) Proto-Mark (MkH) Markan Hypothesis (MkH) Proto-Secret Mark Koester Hypothesis Deutero-Mark (dMk) Three-Source Hypothesis [Mark-Q-Matthew model]3SH Farrer Hypothesis [Mark-Matthew model] Griesbach (or Two-Gospel) Hypothesis [Matthew-Luke model] Proto-Matthew Traditional Augustinian Hypothesis [Matthew-Mark model] Proto-Luke Proto-Matthew (pMt) Proto-Gospel Theory (UrG) LTH: The Logia Translation Hypothesis Multiple Proto-Gospel Theories Mark-Luke model Luke-Matthew model Luke-Mark model Luke-Q model Therefore, Christian apologists can No longer use the argument that Matthew, Mark and Luke are 3 separate eyewitness accounts of Jesus Christ's lifetime.   However, would it still be correct to state that? a)Gospels of Matthew, Mark and Luke are a comprehensive view that correspond to 1 eyewitness account of Jesus Christ's lifetime b)and Gospel of John is the other eyewitness account of Jesus Christ's lifetime Therefore, would it be correct to say that the Bible has 2 eyewitness accounts of Jesus Christ's lifetime?