Understanding Learner-LLM Chatbot Interactions and the Impact of Prompting Guidelines. - Cansu Koyuturk; Emily Theophilou; Sabrina Patania; Gregor Donabauer; Andrea Martinenghi; Chiara Antico; Alessia Telari; Alessia Testa; Sathya Bursic; Franca Garzotto; Davinia Hernández Leo; Udo Kruschwitz; et al. (AIED (2), 2025)