SwingsitlikeHogan
Major Champion
If I'm not sure or it's clear to me that they haven't formally declared a provisional I will always ask, and press for clarity. I usually don't have to ask the same player again.I guess human perception about what is clear and unambiguous varies.
The reality is that if someone has muttered something I am certainly going to take their word for it that they meant provisional if that's what they say afterwards. Others may differ.