Just beat Solo Legendary, confused with end.

SPOILERS

Please answer these questions for me:
How did Cortana hold the Didect to the bridge?
How did Cortana touch MC in the end?
Where were they?
How did MC survive the nuke?
How did Cortana even talk to MC?

> SPOILERS
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> Please answer these questions for me:
> How did Cortana hold the Didect to the bridge?
> How did Cortana touch MC in the end?
> Where were they?
> How did MC survive the nuke?
> How did Cortana even talk to MC?

Cortana touched Master Chief because both were in the Digital world. (like TRON movie)
They were in the Digital world.
MC Survived because his body was not in the physical world…