Elisha asked for and received a double portion of the Spirit given to Elijah.
Jesus Christ was given the Spirit without measure.
I remember him asking for a double portion but I do not remember how it is described.
Elisha is recorded to have done twice the number of miracles of Elijah.
“And there are also many other things which Jesus did, the which, if they should be written every one,
I suppose that even the world itself could not contain the books that should be written. Amen.” (John 21:25)
17 but he shall acknowledge the first-born, the son of the hated, by giving him a double portion of all that he hath; for he is the beginning of his strength; the right of the first-born is his.
It would appear Elisha asks to be acknowledged as Elijah’s firstborn and God may also have given him a greater portion of the gifts of miraculous deeds and speaking the word of God. I am not sure how or if it relates to the fullness of the Spirit Jesus was given.