Both the Cananefates and Batavi moved west, and the Cananefates settled near the Dutch coast. Socalled Roman milestones with their tribal name inscribed on them proves that's where the CF finally ended up.
From what I read the Chatti were quite a powerfull tribe, and later on occupied more land they initially had. Or maube they already occupied more land or were trying to settle elsewhere under the same name.
Words have meanings, yes, and I showed you, but I prefer to stick to ancient languages when being serious and not use MODERN Dutch or Flemmish. Not that I am always serious...
Some Chatti travelled west, became known as the Batavi and Cananefates, and some ended up near Katwijk, and others even ended up in England and Scotland.
Chatti-vik, the area the Chatti settled in, sounds more plausable then your 'area near the hole' ("wijk bij het gat".
But that's just me.
For me it can point in that case to an exit of a river (and this we call now 'monding' (a mouth) i just wondered -> so I will stop here to associate further if i don't want to loose my appetite with my own associations :-).