Using modern time papers with variable contrast, I rarely see the need to compress the scenes when using Delta 400. Grade 0 will give a contrastrange of 1:64 or about 6 stops.(posted 8910 days ago)I do use a compensating developer with Technical Pan, which compresses the density range from 4 to 1.5-1.7.(Grade 0 or Grade 1 paper). It is the good old Rodinal 1:100 for 7 mins at 200C.
Hearing that people run into to trouble developing films with highly diluted Xtol (1:3 or thinner)because of too low amount of developer, I do not think Xtol will work for this.
The effect of compressing high contrast or call it compensation, is exhaustion in the highlights combined with little agaition.
Wolfram