TOA and waiting time distribution for the most prolific FRB 20201124A observing session from Zhang et al. (2022) on MJD 59486 (upper row), and a series of log-uniform random variables (lower row) that simulate an FRB outburst. In our model only a small fraction of the outburst duration is covered by observations, long after the burst onset. The columns are: a) distribution of TOAs measured from the first burst arrival (brown) and from the hypothetical outburst start (violet), with the pale shade of violet showing the whole underlying mostly unobserved outburst; b) same distribution, but binned with logarithmic time bins; c) distribution of TOAs vs. waiting time between two bursts; d) distribution of waiting times. Bursts separated by less than 400 ms combined, producing a single TOA for the start of the combined burst.