(Solved now) Gateoverflow test doubt

Question

In https://gateoverflow.in/356090/Gate-overflow-mock-test-4-56 

Aren't asynchronous flip-flops supposed to update output sequentially due to delay?

I am getting answer Q0 Q1 as  11 → 00 → 10 → 01 → 11 

Comments

I think there are a lot of delays involved in the case of flip-flops, but we tend to ignore them in these kinds of questions (unless and until mentioned). They’ll always update on the clock edge triggering positively/negatively.

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shouldn’t this be considered though ? Source : Morris Mano – page 276

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It is similar, just negative edge triggered - 

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There's no extra delay I am able to see in the waveform diagram you have uploaded. If your doubt is why is it taking long for the signals to propagate, it is only due to the number of flip-flops.

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https://www.youtube.com/watch?v=suE5xUagIBU

 

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Oh! this cleared my error in thinking, thank you so much sir, and sorry for bothering

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i am an aspirant bro :P