to be clear, they are still honouring the warranty – however only replacing the front triangle
The crack is either due to a manufacturing fault, or caused by the stupid integrated bottom bracket thing
But, if the front triangle and swing arm no longer match, they will to coin a phrase and nick jases name, be getting a "flame job" on this very forum.
As for commencal comparisons, ridiculous, commencal had a serious manufacturing issue last year, a few lapdogs have cracked, big wow
as for turn around, it will be around a week (!), but then the Lapierre rep was in Crosstrax when I took it in, so he "expedited" it 🙂