Jakob 3.0+4.0: You Can(not) Cross(word)

Vengeful brother of 1D in Robert's puzzle, abbr.

Suffix indicating the presence of a double bond in a hydrocarbon

Combine, as in corporations

Jazz fans are fans of this type of chord, characterized by including a note 10 or 11 semitones above the tonic

A good time for ESPN to cut away to commercial, abbr.

Org. employing children in robots to fight (EN) 3Ds with the secret goal of 6A-ing all human souls

A founder of communism, or 2D was created to fight these (DE)

Sharp, as in eyesight or wit

Two hours behind the East Coast

Fair hiring letters (I hate this hint so much, I had no choice)