Are Apple and Microsoft... y'know, doing it?

So we all know that Apple decided to use Bing to power Siri's web search. But I notice that the new MS Office for iPhone UI is... sympathetic to iOS 7's new default UITableView control, to say the least.

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This isn't a perfect example - the tables will typically have headers on the grey as well.

So what do you reckon? Is it time for Apple and MS to update their status from 'Just Friends' to 'Totally Binging Eachother'? And if so/if not is that a good or a bad thing?