延えん長ちょう後こう半はん

Meanings

1

second half of extra time (soccer)

Used specifically in soccer to refer to the latter 15-minute period of extra time.

延えん長ちょう前ぜん半はん
Refers to the first half of extra time, while 延長後半 is the second half.
延えん長ちょう戦せん
A broader term for extra time or overtime in sports, not limited to soccer or a specific half.

Compound of 延長 (extra time) and 後半 (second half).