Ahh cool, didn’t realise there were two sorts of rails, and one sort rotate.
Should be fine for a bike rack, except why aren’t the bikes in the berlingo?! It’s the whole reason I have one!
3 Folk and 3 bikes go in without even taking the wheels off, and plenty room for kit. You wanting more than that? 4 and 4 fit too, but admittedly a bit of a faff with wheels.
More folk than that there’s generally 2 vehicles travelling anyhow, so there are better combos for packing. 6 bikes in the back is no bother if there’s only 2 folk, with just front wheels off (or wheels on all but one bike with both off)
You’re doing berlingos wrong!