Μ–L plot similar to Fig. 1, this time showing curves where τ_fraɡ = τ_acc for different accretion rates, namely ṁ = [10,100,10³,10⁴] M_⊙ pc⁻¹ Myr⁻¹ (straight blue lines), using different colors (see individual labels and color bar). We display those HFS with accretion measurements using the same color-code (see color bar on the right). We highlight the region with expected global (radial + longitudinal) collapse (shaded brown area; where τ_lonɡ ~ τ_ff ~ τ_fraɡ) corresponding to the area where both spheroidal (A ≤ 3; black line) and supervirial (m > m_υir; red curve) conditions are satisfied (see also Fig. 2).