What's the extended metaphor in "Funeral Blues" by WH Auden? (extended through entire poem, not just one line)

Stop all the clocks, cut off the telephone,
Prevent the dog from barking with a juicy bone,
Silence the pianos and with muffled drum
Bring out the coffin, let the mourners come.

Let aeroplanes circle moaning overhead
Scribbling on the sky the message ‘He is Dead’.
Put crepe bows round the white necks of the public doves,
Let the traffic policemen wear black cotton gloves.

He was my North, my South, my East and West,
My working week and my Sunday rest,
My noon, my midnight, my talk, my song;
I thought that love would last forever: I was wrong.

The stars are not wanted now; put out every one,
Pack up the moon and dismantle the sun,
Pour away the ocean and sweep up the wood;
For nothing now can ever come to any good.

The extended metaphor of the poem is established with the speaker's expression that nothing else matters after a loved one is lost.

We can reach this conclusion because:

The extended metaphor occurs when a metaphor extends its meaning to a large part of a text and not just a line.

In the case of the poem above, the speaker establishes this kind of metaphor throughout the poem, stressing that the loss of the loved one is equal to the loss of meaning and importance of all things.

This metaphor is highlighted in the third stanza, where the speaker compares the loved one with things that are very important to someone's daily life.

The loss of this person makes the speaker to become disorganized and everything loses its meaning and importance.

Importantly, a metaphor is an implicit comparison between two elements.

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