To assess the suitability of BOUYGUES for the issuance of hybrid bonds, we evaluate the company's financial profile, sector characteristics, and historical financial policy based on the provided facts for the fiscal year ended December 31, 2022.

**1. Sector and Business Profile:**
Bouygues is a diversified conglomerate operating across construction, infrastructure, real estate, media, and telecommunications (as a telecom challenger). While some of these segments possess moderate cash flow visibility, they are generally exposed to cyclicality, unlike pure regulated utilities or energy infrastructure players.

**2. Financial Metrics and M&A Activity:**
During 2022, Bouygues undertook a transformational acquisition (the purchase of Equans), which is reflected in the massive surge in "Cash Flows Used In Obtaining Control Of Subsidiaries" (6.269 billion EUR) and the corresponding jump in "Net Debt" from 941 million EUR in 2021 to 7.44 billion EUR in 2022. This acquisition logically resulted in a deteriorating adjusted leverage trend per Moody's, pushing the S&P Net Debt / EBITDA ratio to 3.26x. However, their S&P FFO / Net Debt remains resilient at 24.46%, supported by substantial operating cash flows (~2.98 billion EUR). 

**3. Financial Policy and Capital Structure:**
A pivotal element of this assessment is Bouygues' historical financial policy. The data indicates that Bouygues has "never" issued hybrid bonds. Despite orchestrating a multi-billion euro acquisition that strained its leverage metrics, management chose to fund the transaction strictly with senior debt and available liquidity rather than tapping the hybrid market to protect its rating headroom. 

**4. Credit Rating Profile:**
With a robust equity base (13.9 billion EUR) covering its net debt (7.44 billion EUR) and strong cash generation capabilities, Bouygues operates with a solid "Strong Investment Grade" profile (historically in the A- / A3 territory). Companies with an A or better rating profile, combined with zero history of hybrid issuances—even during periods of large-scale M&A—are highly unlikely to seek subordinated hybrid capital, viewing it as an expensive and unnecessary alternative to senior debt.

**Conclusion:**
Bouygues has never issued hybrid bonds and maintains a strong Investment Grade profile. Its decision to fund a major strategic acquisition entirely without hybrid capital strongly signals that hybrid instruments are not a part of its financial toolkit. Consequently, the company aligns best with the criteria for being not suitable for such instruments.

<answer>Not Suitable</answer>