The divide has always been so?

Recently i found this quote that really interested me about one of the big topics disused in my 2nd year; the divide between landscape designers and landscape architects. http://smileeverythingwillbeok.blogspot.com/2009/10/is-there-difference-between-landscape.html?zx=a49359b332ce1f85
This link was a blog i updated at the start of the 2nd year with the question: Is there a difference between Landscape Architecture and Landscape Garden Design?

Whilst reading an old book: "How to lay out a garden? Edward Kemp" a Landscape gardener from Birkenhead Park. I found this quote: " It is much to be regretted that architects and landscape-gardeners do not more usually work together, in complete unison, from the very commitment of any undertaking in which they are jointly consulted; and he who would produce a work in which the relation of the two arts to each other, and the elements of garde3n architecture and of architectural gardening, should be skilfully handled, and tastefully illustrated, would deserve the thanks of the entire art-loving community." Birkenhead Park, 31st March 1858

Birkenhead Park designed by Joesph Paxton opened in 1850.