WI: Flanders and Denmark under a personal union on 11th century

I read that Canute IV's wife is the heiress of Flanders, what if Flanders and Denmark ended in Personal union in the Late 11th century, how would that affect the Norman Invasion if it still happens or is it butterflied instead..
 
It wouldn't butterfly the invasion as Cnut didn't become king untill the death of his brother 1080.
The personal union would require Cnut to live and make way for his son Charles or Charles to claim the Danish throne/participate in the conflict 1131-34 IF he survives 1127 in Flanders.
 
It wouldn't butterfly the invasion as Cnut didn't become king untill the death of his brother 1080.
The personal union would require Cnut to live and make way for his son Charles or Charles to claim the Danish throne/participate in the conflict 1131-34 IF he survives 1127 in Flanders.
His son could marry Marry Matilda of England as a peace settlement and inherit England and Normandy as well..
 
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