How Much Do We *Really* Know About GRBs?

• Gor Oganesyan (Gran Sasso Science Institute)

What is the present understanding of LIV from transients?

• Samanta Macera (GSSI)

What can we learn from VHE transients and how to detect them?

• Biswajit Banerjee (Gran Sasso Science Institute (GSSI))

Can We Unveil TeV Emission from GW Counterparts? Do We really Care? Who's Intrigued and Ready to Dive in?

• Antonio Stamerra

What does the multimessenger era disclose to us about UHECR sources?

• Denise Boncioli (University of L'Aquila)

UHECR sources: what insights does the maximum rigidity distribution offer, and have we found a new source class?

• Foteini Oikonomou (Norwegian University of Science and Technology)

Cosmic rays from supernova remnants: what are we missing?

• Giovanni Morlino (Gran Sasso Science Institute)

Star clusters: to the knee and beyond?

• Silvia Celli

Are galactic ultra-high-energy gamma-ray sources active or passive?

• Alison Mitchell

IceCube's Galactic Neutrinos: Diffuse Emission or Hidden Sources?

• Markus Ahlers (Niels Bohr Institute)

Could quantum gravity slow down high-energy neutrinos and photons?

• Giulia Gubitosi

Have we observed Lorentz invariance violation in very high-energy cosmic messengers?

• Jose Manuel Carmona

How dirty a black hole can be?

• Andrea Maselli