LONDON (Reuters) - The idea of splitting British retailer Marks & Spencer into two companies - one for clothing and the home, and one for food - is "completely impractical" and not in the board's current thinking, Chairman Archie Norman said on Wednesday.The 135-year-old M&S set out on its latest transformation plan, after over a decade of false dawns, shortly after retail veteran Norman became chairman in 2017 to work alongside Chief Executive Steve Rowe, who has been with the company for 30..