As I understand it, if an employee with a side consulting business has a workplace 401k and solo 401k, the combined annual employee contribution between the 2 plans cannot exceed $19k in 2019 (assuming under 50). What if the employee has a workplace SIMPLE IRA. Can the employee contribute the maximum to the SIMPLE IRA and another $19k to the solo 401k (assuming he/she has the consulting income)? If not, can he/she contribute the difference to the solo 401k assuming he/she maximizes the SIMPLE IRA contribution? Thanks!