NBA referees will host a question-and-answer session on Twitter for games Sunday and Monday, interacting with fans in real time over calls in playoff games.

The referees have done this periodically over the past year, but this is the first time they will operate the "Ref Watch Party" during this postseason, which has been filled with tension between officials and teams.

They will be active for Sunday's Game 4 between the Toronto Raptors and Philadelphia 76ers (3:30 p.m. ET, ABC) and Monday's Game 4 between the Milwaukee Bucks and Boston Celtics (7 p.m. ET, TNT).

The National Basketball Referees Association will field questions at their Twitter handle, @OfficialNBARefs, using the hashtag #RefWatchParty.