A valid interruption does not protect every possible claim forever. The date and scope of the acknowledgement and the specific legal basis still need to be established. The later period should not be calculated merely from the date of the last telephone call.
A part-payment or statement about one head of loss may leave other claims open, including treatment costs, loss of earnings, property damage or later consequential loss. For each head, ask whether it was covered.
Prepare a table with the head of loss, original knowledge, statement, payment, reservation and later step. The limitation check helps with an initial chronology, but not the final legal assessment.