Yi Peng 3 crossed both cables C-Lion 1 and BSC at times matching when they broke

This is the 2nd time China did this in that Baltic isn't it? Both times look intentional.. maybe don't allow Chinese ships in the Baltic?

That would not swing.

Denmark controls the waters of the seaway to Sct. Petersburg and Kaliningrad that are some of the strategically most important ports of Russia.

Blocking of traffic to these would be a severe escalation.

Regularly Russian subs pass through Danish waters - controlled and allowed.