was always for a closed door deposition:
"The subpoenas direct Hunter Biden to appear for a deposition on December 13 and James Biden on December 6."
https://www.npr.org/2023/11/08/1211618526/house-panel-subpoenas-hunter-biden-james-biden-stepping-up-impeachment-probe
Comer also rejected Abbe Lowell's request for a public hearing:
"Comer refused the offer, saying Hunter Biden would be deposed privately and could be called later to testify in a public hearing. The House Oversight Committee “won’t conduct this investigation on Hunter’s terms,” Comer wrote Tuesday on X. “The President’s son must first appear for a deposition.”"
https://time.com/6340565/hunter-biden-testify-impeachment/