Yeah, I posted this in the Kizaru vs BB thread so I will repost it here.
BB is heavily associated with the number 3.
His jolly roger is 3 skulls, his beard is separated into three beads, he carries 3 guns
He used a weapon with 3 blades apparently that scarred Shanks, and left 3 scars on him
He was born on August the
3rd.
His main ship's name is Xebec.
Xebec is a ship with 3 lateens and oars
As I said we know that the BB pirates are hunting for powerful devil fruits
Teach as I said already has 2 op df in his possession
The Yami, the most powerful logia, and the most powerful df according to Teach
and the Gura, the fruit that was stated to have the power to destroy the world
But we know Teach is a greedy person, who will do anything to become more powerful
and we know he and his crew have been hunting for powerful dfs
Ostensibly, even in the latest chapters it was implied he was going to try an get another DF. Not sure about this one tho, as it's ambiguous.
All of this coupled with the constant number 3 looming around Teach, and the implication of completing his trio with a logia, paramecia and zoan imo hint at Teach having another df.