Not to be that guy also, but I did check before posting...
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View attachment 527574
I did choose Central LRT for the Capital Line terminus of this comparison (which does shave off a minute or two) if only because Churchill is closer to the Valley Line as it's more east and therefore I thought this would put it on more equal footing. As the crow flies, Mill Woods to Churchill Connector is 10.3km. Century Park to Central is 9.6km. So slightly shorter. Bringing it to Churchill makes it 9.9km which is closer. Which would mean that Churchill is a fine enough comparison for each line. Churchill to Century Park is still 22 minutes:
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So an extra 500m of distance for the Valley Line amounts to an extra 13 minutes of travel time.