Here, On a Disco 1 This is with the wing removed, and the plastic scuttle cover, at the very base of the A pillar
Door on the left of the pic, corner of bonnet of the right (green):
View attachment 336430
But that ENTIRE seam on Disco 1's lets water in, once the crappy sealer has dried out... it then hold moisture behind it and causes rust too.
Disco 2's are different in this area, but a couple of people have reported that they found a gap there. The water leaks in the seam, into the chamber UNDER the scuttle and drips down the footwell outer panels, rusting out the floors.