highway driving assist v smart cruise

[gooseberry123niro]

After some searches and watching videos I cannot work out the difference in using Highway driving assist and a combination of lane keep assist / lane follow assist / smart cruise control/ intelligent speed limit assist . If I used all of these what extra does the Highway driving assist do ? The other functions seem to cover it all . Thanks for any help with this - the more I watch the more confused Im getting.

[Colin Lambert]

Which model do you have?
I am not aware of all that you quote. As far as I know my 21 reg eNiro 4+ has smart cruise and lane keep, plus all the braking do-das.