In order to condense onto the same staff, breath marks have to be compatible. So duplicate the breath mark to the 2. Oboe and they’ll condense.
That said –
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A lot of your gradual dynamics aren’t rhythmically the right length, you’ve simply dragged them longer/shorter in Engrave mode. If my memory serves, you posted about this in another thread and in that thread, I told you how you can control the rhythmic position and length of dynamics in Write mode. They don’t have to start/end at noteheads, you have other options. You will encounter far fewer issues with graphical offsets not carrying through to condensed staves if you reread this carefully-assembled advice and follow it, because the dynamics won’t be offset at all.
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You decreased the minimum gap between immediate dynamics and the staff in Engraving Options > Dynamics > Vertical Position, but didn’t decrease the value for gradual dynamics by the same amount (1 space). That’s why your immediate and gradual dynamics aren’t aligning. Reducing the gradual dynamic gap by a space will fix that globally, no graphical intervention for every single gradual dynamic required.
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Dynamics will align in a row if you group them.
Here is your project back with some of those changes. I applied the Silence playback to make the file size smaller.
Ob-150-condensing_LH.dorico (983.5 KB)