IMO that's too far back to expect that gap @ 5.4 to be filled,...

IMO that's too far back to expect that gap @ 5.4 to be filled, considering it occurred on the day of the last Ann on 29 March @ 9.42am which precipitated the doubling in the SP that day from 6.0 to 12.0 cents.
The most recent gap I'd be looking at - to be closed quickly?, in the next day or 2? - would be the one illustrated by whitepages127's chart - per his post immediately before yours @ 12.59pm yesterday. This occurred between 7.5c @ 10.39am & 7.3c @ 10.42am that day.
If you find his chart difficult to interpret down to such fine detail, you can see it more clearly defined per Commsec's 1-day 3-minute chart. Guata.