Elephant in the Room has a bugged synergy with Compressed Air Tank. When Compressed Air Tank and Elephant Gun are on their own, no synergy is shown, Elephant Gun shoots its normal bullet spread. But when Elephant in the Room synergy is met, Compressed Air Tank also shows the synergy icon. If this was a second synergy the notifier upon pick-up would have shown it. I tested this with Pig and Turkey, no difference. The Item Tips mod for some reason lists in the description of Compressed Air Tank the synergy for Elephant in the Room. --Niyok (talk) 16:03, 18 July 2020 (UTC)
There's a mechanic where some synergies are flagged as "requires at least one gun and one item". A bunch of these synergies list gun/gun or item/item combos that would activate if this flag wasn't there. Elephant in the Room is one of these; Elephant Gun is listed as synergizing with Compressed Air Tank and Bait Launcher, but neither of them can actually activate the synergy because of the flag. --Exschwasion (talk) 19:46, 18 July 2020 (UTC)