This is probably 2 questions (at least) in 1 - not sure if I'm best posting separately, but will keep it here as they relate.
I intended my bid to be a 2 suiter (highest and lowest, weak or strong) but partner failed to alert. I did then wonder if I had it wrong regarding our agreement as we had been discussing some 2 suited options and I couldn't say for certain our card said Questem. Therefore didn't comment, nor were any questions asked by opponents.
With hindsight I think I should have informed opponents (prior to lead) that I thought partner should have alerted this, but couldn't remember for certain and left them to check our card etc. Am I correct on this?
I also thought I needed to proceed with my bidding as if partner put me with clubs and spades (5-5) although his silence suggested he thought I had made a weak jump overcall in clubs.
Given that he could have passed with a simple preference for clubs or corrected to spades I assumed his 4♣ showed club support and values and felt this supported my decision to bid on to 6.
This contract makes and yielded a top (Match pointed pairs). They led a heart and I can't see any case for any adjustment or changes in their bidding, lead or play (our card did show Questem).
Finally, do people feel 3♣ is a reasonable bid with this hand?