Rule reminder
Comprehensive review of B2 causal structures: (1) 'in ragione di' + noun — formal; (2) 'stante' + noun — legal/bureaucratic; (3) 'considerato che' + indicative — formal documents; (4) 'non che' + subjunctive — presupposition denial; (5) 'non tanto perché...quanto perché' + indicative — graduated cause; (6) perché + indicative (cause) vs perché + subjunctive (purpose); (7) participio passato and gerundio as implicit causal constructions; (8) register awareness.
Which sentence uses 'non che' + 'non tanto perché... quanto perché' in a single, grammatically correct construction?