Yeah, in the 2nd/3rd century.

But as many scholars have noted, the Gospel of John is more in line with mystic (not necessarily gnostic since most of these sects did not assume a demiurge) sects of the time than the more "grounded" synoptic gospels.

The difference is John's followers were not obviously contradictory to Pauline Christianity and were cross pollinating by the late 1st century