I was watching a video about Flanking in Starfinder and I was under the impression that as long as a creature is touching a square across threatening creature, and meeting all the other requirements for Flanking, they'd get the bonus. But the example at 0:58 in the video states they don't get the bonus because they're not directly across from the other creature in melee. Is that the case?
Video for reference:
https://www.youtube.com/watch?v=-ZZzA50ArGk
Flanking
Source Starfinder Core Rulebook pg. 254
When making a melee attack, you gain a +2 bonus to attack rolls if your opponent is threatened (see page 255) by another creature on its opposite border or opposite corner. Only a creature that threatens the opponent can grant this bonus, and your bonus from flanking can never be higher than +2. Creatures with a reach of 0 feet can’t flank an opponent.
When in doubt about whether two characters who threaten an opponent flank it, trace a line between the two attackers’ centers. If the line passes through opposite borders or corners of the opponent’s space, then the opponent is flanked.
Exception: If a creature takes up more than one square, it gets the flanking bonus if any square it occupies counts for flanking.
The situation described is:
(if I can get it to line up
properly...)
OOOB
OCCO
OCCO
OAOO
Where C is a large creature and A & B are allies fighting it.
This does not get flanking because a line from the centre of A to the centre of B does not go through opposite borders. If North is up, the line goes from A through the South side of C and then through the East side of C and then into B.