I'll work through this step-by-step.

## Step 1: Identify the relevant industry

ITALGAS S.P.A. is Italy's largest natural gas distribution company. It operates regulated gas distribution networks. This clearly falls under the **Regulated Utilities** industry methodology.

## Step 2: Estimate Adjusted Debt

I need to identify the components for fiscal year 2022 (data as of 2023-01-01, for the period 2022-01-01 to 2023-01-01).

**Reported Debt:**
- Long-term financial liabilities: 6,402,913,000 EUR
- Short-term financial liabilities: 142,437,000 EUR
- Total reported debt = 6,402,913,000 + 142,437,000 = 6,545,350,000 EUR

**Leases:**
The financial liabilities likely include lease liabilities (IFRS 16). The cash flow statement shows "Cash Outflow For Leases" of 27,865,000 EUR for 2022. Under S&P methodology, lease liabilities are already on the balance sheet under IFRS 16, so they're likely already included in the reported financial liabilities. No additional adjustment needed if they're already in the debt figures.

**Pension Deficit:**
- Noncurrent Provisions For Employee Benefits: 69,917,000 EUR (2023-01-01)
- S&P typically adds pension/post-retirement obligations. I'll add this: 69,917,000 EUR

**Other debt-like items:**
- Other Current Financial Liabilities: 290,000 EUR
- Other Noncurrent Financial Liabilities: 34,000 EUR

**Eligible Cash:**
S&P typically allows netting of surplus cash. For regulated utilities, S&P may net some cash but often conservatively. Cash and cash equivalents at 2023-01-01: 451,946,000 EUR. I'll assume some portion is operational; typically S&P might net excess cash. For a regulated utility, I'll be conservative and deduct the full cash amount.

**Adjusted Debt:**
= 6,545,350,000 + 290,000 + 34,000 + 69,917,000 - 451,946,000
= 6,163,645,000 EUR

## Step 3: Estimate Adjusted EBITDA

**Reported EBITDA (reconstructed):**
- Operating Profit (EBIT): 641,338,000 EUR
- D&A: 479,186,000 EUR
- EBITDA = 641,338,000 + 479,186,000 = 1,120,524,000 EUR

**Adjustments:**

**Pension adjustments:** S&P typically replaces reported pension expense with service cost only, adding back interest cost component. The employee benefits expense is 257,492,000. Without detailed breakdown, I'll use a simplified approach. The adjustment for employee benefit liabilities in cash flow was -17,574,000 (decrease). The pension-related OCI was 8,394,000 pre-tax. A rough S&P pension adjustment might add back the interest cost on pension obligations. However, without detailed pension breakdown, I'll make a modest adjustment.

**Operating lease adjustments:** Under IFRS 16, leases are already capitalized. S&P's approach for IFRS 16 reporters is to add back depreciation of right-of-use assets and deduct the full lease payment. Since these are already in the financial statements under IFRS 16, the EBITDA already reflects this treatment (D&A includes ROU depreciation, and there's no lease expense in operating costs). The net effect is already captured.

**Non-recurring items:** 
- Gains on disposal of non-current assets: 25,357,000 EUR (gain, shown as negative in cash flow adjustments) - should be subtracted from EBITDA
- Share-based payments adjustment: 7,958,000 (non-cash) - could be added back but S&P typically includes this

**Adjusted EBITDA:**
= 1,120,524,000 - 25,357,000 (non-recurring gain)
= 1,095,167,000 EUR

Actually, looking more carefully, the "Adjustments For Losses Gains On Disposal Of Noncurrent Assets" of -25,357,000 suggests a gain. But this might already be in "Other Revenue." For simplicity and given the information available, I'll use the base EBITDA.

Adjusted EBITDA ≈ 1,120,524,000 EUR

## Step 4: Calculate the ratio

Adjusted Debt / Adjusted EBITDA = 6,163,645,000 / 1,120,524,000 = 5.50

<answer>5.50</answer>