The Nachshon Junction and the Shimshon junctions are both near Bet Shemesh, major junctions on the Highway 44. Nachshon and Shimshon are probably about 7 kilometers from each other (estimate).
It seems they are closer together than just in proximity.
The Shimshon Battalion recently held a protest during a ceremony in which they declared they do not take part in disengagements. Now the Nachshon Battalion has also declared that they too will not take part in disengagements.