Scythians and Xiongnu

On the basis of what you have read what is your opinion about any connection between the Scythians and Xiongnu.

It's possible they shared the same ancestors

The description of Scythia from ancient Hungarian sources.

Simon Kezai, Gesta Hunorum et Hungarorum (1280) :

"Scythia lies in Europe and it expands to the east, on the north it ends in a huge sea, otherwise its boundaries are the Rif mountains (probably the Urals) and its far from the hot territories.

Its connected with Asia to the east. Two large rivers flows trough Scythia, one's name is Etöl, the other's is Togora.
Those nations who live in Scythia are lazy, arrogant, their only wish to rob, they care about things doesnt worth to, and their skin is generally brown instead of white.

To the east from Scythia we find the country of Joria, then Tarsia (Tartaria) and Mangalia (Mongolia) where Europe ends.

Under the county of the summer sun it lies the korozmian (kwarezm) nation and Etiopia wich is called little India as well. Then on the south until the river Don, it lies an endless unpassable plain.

River Don wich is called Etöl by the Magyars, flows from Scythia but it passes trough the Rif mountains. On the west the neighbours of Scythia are the Pechenegs and the White Huns. On the north there are endless forests until the country of Suzdal.
There is fog for 9 months in that country, and they see the sun only in june, july and august, and they see the sun only between 6 to 9 oclock.
In the mountains of Suzdal country, there are crystals to be found, and the mountains are guarded by Griffs and hunting falcons lives there wich are called Keretset in Magyar language.

The land of Scythia is one land but it can be divided to 3 countries. Baskar (Baskir) Dent (?) and Magyar countries. In Scythia there are 108 provinces, with 108 tribes as it is divided to 108 pieces by Magor and Hunor when they invaded Scythia at the ancient times. So the clean Hungary is settled by 108 tribes, and if there is anyone else who joined the Hungarians is a foreigner or descend from slaves, because in the swamps of Meotis Hunor and Magor had 108 tribes, not more and not less. at the end of this book all 108 Scythian families will be listed one by one."