Hitler wanted the Jews out of Germany and the Zionist wanted to get to Israel so, of course, he would favour the movement. Was he a Zionist, no.
Hitler was a german nationalist and wanted all German speaking, not Jews of course, united thus the annexing of Austria and so on. If you follow his initial expansion you will see it was where german speaking people were living and formed a large to major part of the population.
"Hitler was not personally involved in the negotiation of the agreement, and his views on it appear to have shifted over time." en.wikipedia.org/wiki/Haavara_Agreement
But I agree the Ken Livingston and all "the going on" was total nonsense. Even that guy Irving (Known as the holocaust denier) has the odd justifiable point but he like most people see only their own view. People are not reasonable nor open minded. That is the real problem. If they were then they would not be threatened by open and frank discussion.
Nationalism can be good and nationalism can be bad. Jewish settlements appear to have a total disregard of other people living in the same areas. If what I see is true it is very sad that the people involved are acting no difference to the germans who persecuted the Jews. Surely they should learn from the past evil.
Nationalist should have a greater goal than uniting or separating, that was what was wrong with the Scottish movement their goal was to separate from the UK but never clear what their plan was for a better society. The goal they had was purely nationlistic. A pity.