For current products the contents of the box are listed on the product page under ‘Specification’ and then ‘Supplied with…’ for the Supercap there isn’t a ‘Supplied with’ entry, so it comes with a standard power lead only.
Yes, I think you hit the nail on the head there - presumably different Burndy configuration for Superline or SNAXO.
Much of my equipment is Olive era and I simply can’t remember what came with what!
Perhaps the website could do with a little extra detail specifically about supplied cables.
CliveB’s comment is interesting as it indicates a ‘missing’ ‘Supplied With’ entry which you’d only realise if you’d looked at something else with that entry!
Yes, no point including cables (other than power) with a Supercap as so many different possibilities. Compare with, say, a HICAP, where only a SNAIC5 is used, so it’s included in the box.