You see a chance that Poland and Germany would've co-existed without going to war?
Sure I do! It was only reasonable thing to do! Hitler wanted Poland in his camp.
Polish government at the time refused to consider his offer because it would means Gdansk incorporated by Germany and autobahn and railways across Poland. Providing connection between main Germany and East Prussia!
Polish government refused because it would mean that Poland is second class state - German vassal, and because such move would had turned public opinion against government, which wasn't that wildly supported and opposition only waited for an opening.
So, they garbed French and British proportion without much of consideration: but hey they are the world powers half of the glob belong to them, Germany is doomed and we will be in the camp of victors.
Walery Sławek hero, honourable man which made him useless in political internal games, former prime minister, ex-colonel, guy whom Piłsudski had seen as a President after his own death, was all for an agreement with Germany. Unfortunately politicians did not follow The Marshal wishes and Presidency was hold by a good scientist but a very lousy statesman.
Soon after treaty with France and Britian was signed - Walery Sławek committed suicide.
The main misconception of the western historiography is taking for granted allies propaganda about helping Poland against German invasion when in the first place, they ensured that such invasion will take place.
Otherwise Hitler wanted get even with France in the first place, and Britain was considered a future ally or at least neutral, but Britain ruling class did not wanted German influence all over Europe.
It was Britain that wanted war with Germany not other way around.