Everyone understands the danger is past (3,5)

I believe the answer is:

all clear

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'the danger is past' is the definition.
(I've seen this before)

'everyone understands' is the wordplay.
'everyone' becomes 'all' (all people).
'understands' becomes 'clear' (I am not sure about this - if you are sure you should believe this answer much more).
'all'+'clear'='ALL-CLEAR'

Can you help me to learn more?

(Other definitions for all clear that I've seen before include "Understood" , "Signal danger is ended" , "Siren sound to mark end of bombing by planes" , "no doubts" , "Message confirming safety" .)

I've seen this clue in The Irish News.

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