Is minimal_pipe enforced on long MAL plans?

Hi there, Is minimal_pipe enforced under any condition? For example when the the MAL plan generated by rel2bin is longer than a given threshold? Context: I have a pretty long query which results in a MAL plan of 33K lines. Though the query is a bit long, I still would expect a 2-3K lines MAL plan. The plan indeed contains the same pieces of code re-evaluated over and over. It first, I simply blamed commonTerms not doing its job. The thing is, the MAL plans generated with minimal_pipe and default_pipe are absolutely identical for this query. Hence my question above. Best, Roberto