Which came first: the calling of Peter and Andrew or the imprisonment of John the Baptist?

Textual conflict

Weak tension

The alleged conflict needs substantial assumptions, such as treating an omission as a denial or figurative language as literal.

Importance

Major

A major event or claim with wider implications.

Andrew's earlier introduction of Peter need not be the same event as the later lakeside summons after John's arrest.

An editorial assessment of the quoted passages. Importance describes the stakes; it does not increase certainty. Reading order weighs both.