From 3rd person limitedRewrite the narratives, and leave the dialogues.
Choose the passage and delete all the narratives
Add long Beowulf integration quotationsQuotations and valuesCant change the plot
Rewrite the whole scene and add inner thoughts and emotions
Make more overlaps between two characters like the place they are from
You can leave the facts
1/3 dialogue from Beowulf, 1/3 dialogue from the Hobbit, and 1/3 dialogue from your ownItalicize the quotes taken from Beowulf and put line numbersExamples: Hrothgar vs. Thorin, Grendel vs. Gollum, Bard vs. Beowulf, Gandalf vs. Hrothgar