As there are very often speaker that take longer than they are supposed to (and thus either cause delays or take time away from questions) it is not very disturbing to have someone speak a bit shorter.

Also, if you managed to say everything you wanted to say in a slightly shorter amount of time, that is fine, as you did not fill your talk with unnecessary extra words.

As there are very often speakers who take longer than they are supposed to (and thus either cause delays or take time away from questions), it is not very disturbing to have someone speak a bit shorter.

Also, if you managed to say everything you wanted to say in a slightly shorter amount of time, that is fine, as you did not fill your talk with unnecessary extra words.