But this scarcely is the tributary of the Ganges, Gogra, for the name seems to refer to a more western stream, since it is associated with the Gomat[=i] (Gomal).

One may surmise that in the time of the Rig Veda the Aryans knew only by name the country east of Lucknow.

It is in the Punj[=a]b and a little to the west and east of it (how far it is impossible to state with accuracy) where lies the real theatre of activity of the Rig Vedic people.
Some scholars believe that this people had already heard of the two oceans.

This point again is doubtful in the extreme.

No descriptions imply a knowledge of ocean, and the word for ocean means merely a 'confluence' of waters, or in general a great oceanic body of water like the air.