Viewers Integration?

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Really struggling with this tc I understand that the semi colon indicates support because of which we chose a synonym of ‘not simultaneous’ however in the first half of the sentence we r talking about indicators working but the second half says viewers integration
so isnt this like a block of 4
indicators dont work simultaneously
viewers integration - simultaneous

Can somebody help?

Hi, @user9842 generally Block of 4 indicates contrast. But please read the sentence here carefully, there exists no contrast.
and when trying to draw a contrast between indicators and the viewer’s integration, it is incorrect, rather contrast is to be drawn with respect to one parameter only and notice its changes, here in our case it is with respect to “indicators”.
But, see here nothing is getting contrasted. So it’s supported because of ( ; )

So, that’s why Greg used ( ; ) as support.

NOTE: Try to understand the context of the sentence as well, do not forcefully try to draw out the contrast in every sentence.

I hope now your doubt may get clarified.