In auction 1
1♣ - was precison
2♣ - was diamonds or both majors
Dbl = no agreement per se, meant as penalty
South was confused by 3♣ so the auction took a turn towards guess work.
Opening lead ♣2 on both auctions
West shows up with 4♣ and one ♥. west throws three diamonds on hearts (Q first then two smalls).
Plan your play.

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Auction 1
1♣* - (2♣)* - DBL - (Pass)
2♥ - (Pass) - 3♣ - (Pass)
3NT - (Pass) - 5♥ - (Pass)
6♥ - all pass
Auction 2.
(1♦) pass - (pass) - 2♥
(Pass)------> you get to 6♥ by south.